NL252835A - - Google Patents

Info

Publication number: NL252835A
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.)

1959-06-23

Publication of NL252835A publication Critical patent/NL252835A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Interface Circuits In Exchanges (AREA)
Selective Calling Equipment (AREA)
Radio Relay Systems (AREA)
Telephonic Communication Services (AREA)

NL252835D 1959-06-23 NL252835A (cg-RX-API-DMAC10.html)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DES63578A DE1086760B (de)	1959-06-23	1959-06-23	Schaltungsanordnung fuer Fernmelde-, insbesondere Fernsprechanlagen mit Frequenz-Kodewahl

Publications (1)

Publication Number	Publication Date
NL252835A true NL252835A (cg-RX-API-DMAC10.html)

Family

ID=7496479

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL252835D NL252835A (cg-RX-API-DMAC10.html)	1959-06-23

Country Status (6)

Country	Link
US (1)	US3140356A (cg-RX-API-DMAC10.html)
BE (1)	BE592089A (cg-RX-API-DMAC10.html)
CH (1)	CH379585A (cg-RX-API-DMAC10.html)
DE (1)	DE1086760B (cg-RX-API-DMAC10.html)
GB (1)	GB926679A (cg-RX-API-DMAC10.html)
NL (1)	NL252835A (cg-RX-API-DMAC10.html)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE466455A (cg-RX-API-DMAC10.html) *	1942-04-28
US2332912A (en) *	1942-05-01	1943-10-26	Bell Telephone Labor Inc	Telephone system
US2554201A (en) *	1946-06-19	1951-05-22	Ericsson Telefon Ab L M	Key-sending automatic telephone signaling system
US2470145A (en) *	1947-09-25	1949-05-17	American Telephone & Telegraph	Multifrequency signaling system
US2966659A (en) *	1953-12-30	1960-12-27	Bell Telephone Labor Inc	Signaling system
NL201110A (cg-RX-API-DMAC10.html) *	1954-10-25
DE1047872B (de) *	1956-08-16	1958-12-31	Standard Elektrik Lorenz Ag	Verfahren zur UEbertragung von Schaltauftraegen, die aus einer Reihe von einzelnen Teilauftraegen zusammengesetzt sind, in Fernmelde-, insbesondere Fernsprechanlagen
DE1047873B (de) *	1958-02-01	1958-12-31	Standard Elektrik Lorenz Ag	Verfahren zur UEbertragung mehrstelliger Informationen mittels Frequenzkombinationenin Fernmelde-, insbesondere Fernsprechanlagen

0
- NL NL252835D patent/NL252835A/xx unknown
1959
- 1959-06-23 DE DES63578A patent/DE1086760B/de active Pending
1960
- 1960-06-15 GB GB21108/60A patent/GB926679A/en not_active Expired
- 1960-06-20 BE BE592089A patent/BE592089A/fr unknown
- 1960-06-22 US US37869A patent/US3140356A/en not_active Expired - Lifetime
- 1960-06-22 CH CH709460A patent/CH379585A/de unknown

Also Published As

Publication number	Publication date
DE1086760B (de)	1960-08-11
US3140356A (en)	1964-07-07
CH379585A (de)	1964-07-15
BE592089A (fr)	1960-10-17
GB926679A (en)	1963-05-22

Publication	Publication Date	Title
BE584924A (cg-RX-API-DMAC10.html)	1960-05-23
AT222246B (cg-RX-API-DMAC10.html)	1962-07-10
BE575321A (cg-RX-API-DMAC10.html)	1959-08-03
BE575800A (cg-RX-API-DMAC10.html)	1959-06-15
BE581936A (cg-RX-API-DMAC10.html)
BE581344A (cg-RX-API-DMAC10.html)
BE559419A (cg-RX-API-DMAC10.html)
BE567011A (cg-RX-API-DMAC10.html)
BE573433A (cg-RX-API-DMAC10.html)
BE574478A (cg-RX-API-DMAC10.html)
BE503570A (cg-RX-API-DMAC10.html)
BE575793A (cg-RX-API-DMAC10.html)
BE450855A (cg-RX-API-DMAC10.html)
BE576344A (cg-RX-API-DMAC10.html)
BE576772A (cg-RX-API-DMAC10.html)	1959-04-15
BE577586A (cg-RX-API-DMAC10.html)	1959-04-30
BE579532A (cg-RX-API-DMAC10.html)
BE579636A (cg-RX-API-DMAC10.html)	1959-12-14
BE580249A (cg-RX-API-DMAC10.html)
BE583741A (cg-RX-API-DMAC10.html)
BE581350A (cg-RX-API-DMAC10.html)	1960-02-04
BE581586A (cg-RX-API-DMAC10.html)
BE581706A (cg-RX-API-DMAC10.html)
BE581863A (cg-RX-API-DMAC10.html)
NL239377A (cg-RX-API-DMAC10.html)