BE354512A - - Google Patents

Info

Publication number: BE354512A
Authority: BE; Belgium

Application number

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.)

1927-09-26

Publication of BE354512A publication Critical patent/BE354512A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M5/00—Manual exchanges
- H04M5/10—Manual exchanges using separate plug for each subscriber

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Interface Circuits In Exchanges (AREA)

BE354512D 1927-09-26 BE354512A (US06650917-20031118-M00005.png)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US221878A US1771842A (en)	1927-09-26	1927-09-26	Telephone system

Publications (1)

Publication Number	Publication Date
BE354512A true BE354512A (US06650917-20031118-M00005.png)

Family

ID=22829790

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE354512D BE354512A (US06650917-20031118-M00005.png)	1927-09-26

Country Status (3)

Country	Link
US (1)	US1771842A (US06650917-20031118-M00005.png)
BE (1)	BE354512A (US06650917-20031118-M00005.png)
GB (1)	GB297747A (US06650917-20031118-M00005.png)

0
- BE BE354512D patent/BE354512A/xx unknown
1927
- 1927-09-26 US US221878A patent/US1771842A/en not_active Expired - Lifetime
1928
- 1928-09-25 GB GB27534/28A patent/GB297747A/en not_active Expired

Also Published As

Publication number	Publication date
GB297747A (US06650917-20031118-M00005.png)	1929-12-27
US1771842A (en)	1930-07-29

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