ES72723A1 - Improvements in telephone receivers and transmitters. - Google Patents

Improvements in telephone receivers and transmitters.

Info

Publication number: ES72723A1
Authority: ES; Spain
Prior art keywords: transmitters; telephone receivers; receivers; telephone
Prior art date: 1920-02-23
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

Application number

ES72723A

Other languages

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.)

BAE Systems Electronics Ltd

Original Assignee

Marconis Wireless Telegraph Co Ltd

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.)

1920-02-23

Filing date

1920-02-23

Publication date

1920-05-10

1920-02-23 Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd

1920-02-23 Priority to ES72723A priority Critical patent/ES72723A1/en

1920-05-10 Publication of ES72723A1 publication Critical patent/ES72723A1/en

Status Expired legal-status Critical Current

Links

ES72723A 1920-02-23 1920-02-23 Improvements in telephone receivers and transmitters. Expired ES72723A1 (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
ES72723A ES72723A1 (en)	1920-02-23	1920-02-23	Improvements in telephone receivers and transmitters.

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
ES72723A ES72723A1 (en)	1920-02-23	1920-02-23	Improvements in telephone receivers and transmitters.

Publications (1)

Publication Number	Publication Date
ES72723A1 true ES72723A1 (en)	1920-05-10

Family

ID=64242495

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ES72723A Expired ES72723A1 (en)	1920-02-23	1920-02-23	Improvements in telephone receivers and transmitters.

Country Status (1)

Country	Link
ES (1)	ES72723A1 (en)

1920
- 1920-02-23 ES ES72723A patent/ES72723A1/en not_active Expired

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