NL64921C - - Google Patents

Info

Publication number: NL64921C
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.)

1942-10-24

Publication of NL64921C publication Critical patent/NL64921C/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/58—Anti-side-tone circuits
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/40—Artificial lines; Networks simulating a line of certain length
- 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
- H04M1/76—Compensating for differences in line impedance

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Computer Networks & Wireless Communication (AREA)
Thermistors And Varistors (AREA)
Telephone Function (AREA)
Monitoring And Testing Of Exchanges (AREA)

NL64921D 1942-10-24 NL64921C (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US463184A US2387269A (en)	1942-10-24	1942-10-24	Telephone system

Publications (1)

Publication Number	Publication Date
NL64921C true NL64921C (enrdf_load_html_response)

Family

ID=23839177

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL64921D NL64921C (enrdf_load_html_response)	1942-10-24

Country Status (6)

Country	Link
US (1)	US2387269A (enrdf_load_html_response)
BE (1)	BE468046A (enrdf_load_html_response)
ES (1)	ES177484A1 (enrdf_load_html_response)
FR (1)	FR941331A (enrdf_load_html_response)
GB (1)	GB591495A (enrdf_load_html_response)
NL (1)	NL64921C (enrdf_load_html_response)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2518178A (en) *	1947-11-05	1950-08-08	Automatic Elect Lab	Antisidetone and line balancing substation circuits for telephone systems
BE485032A (enrdf_load_html_response) *	1947-12-22
US2568150A (en) *	1948-06-15	1951-09-18	Bell Telephone Labor Inc	Balancing network for subscribers' telephone sets
US2604543A (en) *	1950-11-09	1952-07-22	Bell Telephone Labor Inc	Equalizer circuit
BE505815A (enrdf_load_html_response) *	1950-12-27
DE886766C (de) *	1951-03-03	1953-08-17	Normalzeit G M B H	Einrichtung zur Verhinderung des unerlaubten Abhoerens von Telephongespraechen
BE510745A (enrdf_load_html_response) *	1951-04-18
DE1039104B (de) *	1951-04-18	1958-09-18	Int Standard Electric Corp	Schaltungsanordnung fuer Fernsprech-stationen zur Verhinderung des Mithoerens der eigenen Sprache
DE1038118B (de) *	1951-04-26	1958-09-04	Int Standard Electric Corp	Schaltungsanordnung fuer Fernsprechstationen zur Verhinderung des Mithoerens der eigenen Sprache und von Raumgeraeuschen
BE539848A (enrdf_load_html_response) *	1954-07-16
US3119063A (en) *	1961-01-13	1964-01-21	Gen Dynamics Corp	Transmission line terminating impedance distinguishing circuit
DE1928434A1 (de) *	1969-06-04	1970-12-10	Siemens Ag	Schaltungsanordnung zum Anschluss von Gleichstrom-Datenuebertragungssystemen mit niedriger Sendespannung an eine Datenvermittlung
NL7805416A (nl) *	1978-05-19	1979-11-21	Philips Nv	Zelf-instellende vorkschakeling.
US6146056A (en) *	1998-01-14	2000-11-14	Jennmar Corporation	Channel and bearing plate assembly

0
- BE BE468046D patent/BE468046A/xx unknown
- NL NL64921D patent/NL64921C/xx active
1942
- 1942-10-24 US US463184A patent/US2387269A/en not_active Expired - Lifetime
1944
- 1944-06-02 GB GB10687/44A patent/GB591495A/en not_active Expired
1947
- 1947-01-30 FR FR941331D patent/FR941331A/fr not_active Expired
- 1947-03-18 ES ES0177484A patent/ES177484A1/es not_active Expired

Also Published As

Publication number	Publication date
GB591495A (en)	1947-08-20
FR941331A (fr)	1949-01-07
ES177484A1 (es)	1947-05-01
BE468046A (enrdf_load_html_response)
US2387269A (en)	1945-10-23

Publication	Publication Date	Title
BE361247A (enrdf_load_html_response)
BE406116A (enrdf_load_html_response)
BE441168A (enrdf_load_html_response)
BE441218A (enrdf_load_html_response)
BE442959A (enrdf_load_html_response)
BE443577A (enrdf_load_html_response)
BE444337A (enrdf_load_html_response)
BE444433A (enrdf_load_html_response)
BE444539A (enrdf_load_html_response)	1942-03-31
BE444654A (enrdf_load_html_response)	1942-03-31
BE444779A (enrdf_load_html_response)
BE444937A (enrdf_load_html_response)
BE445013A (enrdf_load_html_response)
BE445032A (enrdf_load_html_response)	1942-04-30
BE445075A (enrdf_load_html_response)	1942-05-30
BE445132A (enrdf_load_html_response)
BE445174A (enrdf_load_html_response)
BE445207A (enrdf_load_html_response)
BE445519A (enrdf_load_html_response)
BE445534A (enrdf_load_html_response)
BE445553A (enrdf_load_html_response)
BE445562A (enrdf_load_html_response)
BE445596A (enrdf_load_html_response)
BE445632A (enrdf_load_html_response)
BE445672A (enrdf_load_html_response)