CH57659A - Device for semi-automatic telephone systems - Google Patents

Device for semi-automatic telephone systems

Info

Publication number: CH57659A
Authority: CH; Switzerland
Prior art keywords: semi; telephone systems; automatic telephone; automatic; systems
Prior art date: 1911-07-24

Application number

CH57659A

Other languages

German (de)

Inventor

Co Bell Telephon Manufacturing

Original Assignee

Bell Telephone Mfg

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.)

1911-07-24

Filing date

1911-07-24

Publication date

1913-03-01

1911-07-24 Application filed by Bell Telephone Mfg filed Critical Bell Telephone Mfg

1913-03-01 Publication of CH57659A publication Critical patent/CH57659A/en

Links

CH57659A 1911-07-24 1911-07-24 Device for semi-automatic telephone systems CH57659A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CH57659T		1911-07-24

Publications (1)

Publication Number	Publication Date
CH57659A true CH57659A (en)	1913-03-01

Family

ID=4298980

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH57659A CH57659A (en)	1911-07-24	1911-07-24	Device for semi-automatic telephone systems

Country Status (1)

Country	Link
CH (1)	CH57659A (en)

1911
- 1911-07-24 CH CH57659A patent/CH57659A/en unknown

Similar Documents

Publication	Publication Date	Title
CH57659A (en)	1913-03-01	Device for semi-automatic telephone systems
AT69059B (en)	1915-06-10	Circuit arrangement for telephone systems.
AT71117B (en)	1916-02-10	Circuit arrangement for telephone systems.
CH52337A (en)	1911-11-16	Call counting device for telephone systems
CH55448A (en)	1912-08-16	Call counting device for telephone systems
NL5179C (en)	1920-08-02	Automatic telephone system
FR18913E (en)	1914-08-07	Semi-automatic telephone system
CH59283A (en)	1913-05-16	Switching for automatic or semi-automatic telephone systems
CH59025A (en)	1913-04-16	Telephone system dialers
FR453157A (en)	1913-06-02	Semi-automatic telephone system
DK17025C (en)	1913-02-24	Connecting device for semi-automatic Telephone systems.
DK17874C (en)	1913-09-29	Connecting device for semi-automatic Telephone systems.
CH62469A (en)	1913-12-01	Telephone system
AT65751B (en)	1914-07-25	Circuit for semi-automatic telephone systems.
DK17225C (en)	1913-04-21	Connecting device for semi-automatic Telephone systems.
NL3846C (en)	1919-06-20	Automatic telephone system
FR445184A (en)	1912-11-05	Telephone system
FR449230A (en)	1913-02-20	Telephone system
FR452744A (en)	1913-05-22	Telephone system
FR452751A (en)	1913-05-23	Telephone system
FR453926A (en)	1913-06-21	Telephone system
FR456997A (en)	1913-09-09	Telephone system
CH57405A (en)	1913-01-02	Holding device for microphones
CH58938A (en)	1913-04-16	Drawing device for geometric drawing
CH59524A (en)	1913-06-02	Arrangement for automatic telephone systems