CH240076A - Telephone switchboard. - Google Patents

Telephone switchboard.

Info

Publication number: CH240076A
Authority: CH; Switzerland
Prior art keywords: telephone switchboard; switchboard; telephone
Prior art date: 1935-06-21

Application number

Other languages

German (de)

Inventor

Bell Telephone Manufac Anonyme

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.)

1935-06-21

Filing date

1936-06-22

Publication date

1945-11-30

1936-06-22 Application filed by Bell Telephone Mfg filed Critical Bell Telephone Mfg

1945-11-30 Publication of CH240076A publication Critical patent/CH240076A/en

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Interface Circuits In Exchanges (AREA)

CH240076D 1935-06-21 1936-06-22 Telephone switchboard. CH240076A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US27675A US2136620A (en)	1935-06-21	1935-06-21	Telephone system

Publications (1)

Publication Number	Publication Date
CH240076A true CH240076A (en)	1945-11-30

Family

ID=21839142

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH240076D CH240076A (en)	1935-06-21	1936-06-22	Telephone switchboard.

Country Status (2)

Country	Link
US (1)	US2136620A (en)
CH (1)	CH240076A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2588052A (en) *	1943-05-05	1952-03-04	American Telephone & Telegraph	Control circuit for telephone systems
US3048662A (en) *	1957-05-17	1962-08-07	Itt	Pabx switching system

1935
- 1935-06-21 US US27675A patent/US2136620A/en not_active Expired - Lifetime
1936
- 1936-06-22 CH CH240076D patent/CH240076A/en unknown

Also Published As

Publication number	Publication date
US2136620A (en)	1938-11-15

Similar Documents

Publication	Publication Date	Title
CH195295A (en)	1938-01-31	Kötzerspulmaschine.
CH240076A (en)	1945-11-30	Telephone switchboard.
CH234264A (en)	1944-09-15	Telephone system.
DK52326C (en)	1936-10-19	Telephone set.
DK54647C (en)	1938-04-25	Telephone system.
CH191685A (en)	1937-06-30	Telephone dial.
AT156098B (en)	1939-05-10	Telephone cables.
DK51852C (en)	1936-07-06	Alarm telephone.
DK53554C (en)	1937-09-06	Kanaldyne.
DK51649C (en)	1936-05-18	Snaplaas.
DK55084C (en)	1938-08-15	Telephone system.
CH185792A (en)	1936-08-15	Telecommunication system.
DK55785C (en)	1939-02-06	Telephone handset.
DK55668C (en)	1939-01-09	Telephone handset.
DK50480C (en)	1935-07-29	Telephone cabinet.
DK53928C (en)	1937-11-29	Telephone system.
ES138995A1 (en)	1936-01-16	Improved breaker
DK58124C (en)	1940-11-04	Fully or semi-automatic Telephone System.
DK54243C (en)	1938-01-31	Microphone.
DK53478C (en)	1937-08-23	Telephone system with Selector operation.
DK53294C (en)	1937-07-12	Telephone system with Selector operation.
DK52424C (en)	1936-12-14	Telephone selector.
DK52174C (en)	1936-09-21	Raised.
DK51033C (en)	1935-12-16	Cabinet.
DK54001C (en)	1937-12-13	Dynamo.