NL56358C - - Google Patents

Info

Publication number: NL56358C
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.)

1937-12-11

Publication of NL56358C publication Critical patent/NL56358C/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Devices For Supply Of Signal Current (AREA)

NL56358D 1937-12-11 NL56358C (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CH2250769X		1937-12-11

Publications (1)

Publication Number	Publication Date
NL56358C true NL56358C (enrdf_load_html_response)

Family

ID=4568218

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL56358D NL56358C (enrdf_load_html_response)	1937-12-11

Country Status (2)

Country	Link
US (1)	US2250769A (enrdf_load_html_response)
NL (1)	NL56358C (enrdf_load_html_response)

0
- NL NL56358D patent/NL56358C/xx active
1938
- 1938-12-09 US US244785A patent/US2250769A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
US2250769A (en)	1941-07-29

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