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GB2334851B - A loudspeaker/microphone - Google Patents

A loudspeaker/microphone

Info

Publication number
GB2334851B
GB2334851B GB9902633A GB9902633A GB2334851B GB 2334851 B GB2334851 B GB 2334851B GB 9902633 A GB9902633 A GB 9902633A GB 9902633 A GB9902633 A GB 9902633A GB 2334851 B GB2334851 B GB 2334851B
Authority
GB
United Kingdom
Prior art keywords
loudspeaker
microphone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9902633A
Other versions
GB9902633D0 (en
GB2334851A (en
Inventor
Joseph Harold Stephens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9902633A priority Critical patent/GB2334851B/en
Publication of GB9902633D0 publication Critical patent/GB9902633D0/en
Publication of GB2334851A publication Critical patent/GB2334851A/en
Application granted granted Critical
Publication of GB2334851B publication Critical patent/GB2334851B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
GB9902633A 1999-02-08 1999-02-08 A loudspeaker/microphone Expired - Fee Related GB2334851B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9902633A GB2334851B (en) 1999-02-08 1999-02-08 A loudspeaker/microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9902633A GB2334851B (en) 1999-02-08 1999-02-08 A loudspeaker/microphone

Publications (3)

Publication Number Publication Date
GB9902633D0 GB9902633D0 (en) 1999-03-31
GB2334851A GB2334851A (en) 1999-09-01
GB2334851B true GB2334851B (en) 2000-01-12

Family

ID=10847212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9902633A Expired - Fee Related GB2334851B (en) 1999-02-08 1999-02-08 A loudspeaker/microphone

Country Status (1)

Country Link
GB (1) GB2334851B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1270033A (en) * 1968-11-19 1972-04-12 Nippon Musical Instruments Mfg Louspeaker
GB1487942A (en) * 1973-09-21 1977-10-05 Union Carbide Corp Diaphragms
JPS5658834A (en) * 1979-10-18 1981-05-22 Tsuneo Matsumura Amber like ornament having foamed pattern and preparation thereof
GB2072694A (en) * 1980-03-31 1981-10-07 Pioneer Electronic Corp Vibratory elements for audio equipment
US4410768A (en) * 1980-07-23 1983-10-18 Nippon Gakki Seizo Kabushiki Kaisha Electro-acoustic transducer
US4562899A (en) * 1982-06-16 1986-01-07 Nippon Gakki Seizo Kabushiki Kaisha Diaphragm of electroacoustic transducer and method of manufacturing the same
EP0336448A2 (en) * 1988-04-08 1989-10-11 Matsushita Electric Industrial Co., Ltd. Electroacoustic diaphragm and method for making same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4545832A (en) * 1982-05-27 1985-10-08 B & H Manufacturing Company, Inc. Machine and method for applying heat shrink labels

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1270033A (en) * 1968-11-19 1972-04-12 Nippon Musical Instruments Mfg Louspeaker
GB1487942A (en) * 1973-09-21 1977-10-05 Union Carbide Corp Diaphragms
JPS5658834A (en) * 1979-10-18 1981-05-22 Tsuneo Matsumura Amber like ornament having foamed pattern and preparation thereof
GB2072694A (en) * 1980-03-31 1981-10-07 Pioneer Electronic Corp Vibratory elements for audio equipment
US4410768A (en) * 1980-07-23 1983-10-18 Nippon Gakki Seizo Kabushiki Kaisha Electro-acoustic transducer
US4562899A (en) * 1982-06-16 1986-01-07 Nippon Gakki Seizo Kabushiki Kaisha Diaphragm of electroacoustic transducer and method of manufacturing the same
EP0336448A2 (en) * 1988-04-08 1989-10-11 Matsushita Electric Industrial Co., Ltd. Electroacoustic diaphragm and method for making same

Also Published As

Publication number Publication date
GB9902633D0 (en) 1999-03-31
GB2334851A (en) 1999-09-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee