NL75995C - - Google Patents

Info

Publication number: NL75995C
Authority: NL; Netherlands

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.)

1939-12-11

Publication of NL75995C publication Critical patent/NL75995C/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Computer Networks & Wireless Communication (AREA)
Structure Of Telephone Exchanges (AREA)
Arrangements For Transmission Of Measured Signals (AREA)

NL75995D 1939-12-11 NL75995C (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB31923/39A GB535124A (en)	1939-12-11	1939-12-11	Improvements in or relating to carrier telephone and signalling systems

Publications (1)

Publication Number	Publication Date
NL75995C true NL75995C (enrdf_load_html_response)

Family

ID=10330402

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL75995D NL75995C (enrdf_load_html_response)	1939-12-11

Country Status (5)

Country	Link
US (1)	US2280672A (enrdf_load_html_response)
BE (1)	BE465689A (enrdf_load_html_response)
FR (1)	FR927296A (enrdf_load_html_response)
GB (1)	GB535124A (enrdf_load_html_response)
NL (1)	NL75995C (enrdf_load_html_response)

0
- NL NL75995D patent/NL75995C/xx active
- BE BE465689D patent/BE465689A/xx unknown
1939
- 1939-12-11 GB GB31923/39A patent/GB535124A/en not_active Expired
1940
- 1940-11-20 US US366468A patent/US2280672A/en not_active Expired - Lifetime
1946
- 1946-04-23 FR FR927296D patent/FR927296A/fr not_active Expired

Also Published As

Publication number	Publication date
FR927296A (fr)	1947-10-24
GB535124A (en)	1941-03-28
US2280672A (en)	1942-04-21
BE465689A (enrdf_load_html_response)

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