FR694634A - Improvements to electric selectors - Google Patents

Improvements to electric selectors

Info

Publication number
FR694634A
FR694634A FR694634DA FR694634A FR 694634 A FR694634 A FR 694634A FR 694634D A FR694634D A FR 694634DA FR 694634 A FR694634 A FR 694634A
Authority
FR
France
Prior art keywords
electric selectors
selectors
electric
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
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.)
Filing date
Publication date
Application filed by Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Application granted granted Critical
Publication of FR694634A publication Critical patent/FR694634A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/24—Apparatus or circuits at the receiving end
    • H04L15/26—Apparatus or circuits at the receiving end operating only on reception of predetermined code signals, e.g. distress signals, party-line call signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
FR694634D 1930-12-04 1930-04-28 Improvements to electric selectors Expired FR694634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36606/30A GB366644A (en) 1930-12-04 1930-12-04 Improvements relating to electric selectors

Publications (1)

Publication Number Publication Date
FR694634A true FR694634A (en) 1930-12-05

Family

ID=10389654

Family Applications (1)

Application Number Title Priority Date Filing Date
FR694634D Expired FR694634A (en) 1930-12-04 1930-04-28 Improvements to electric selectors

Country Status (2)

Country Link
FR (1) FR694634A (en)
GB (4) GB334516A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972799C (en) * 1937-11-24 1959-09-24 Siemens Ag Relay arrangement
US2436787A (en) * 1942-06-05 1948-03-02 Standard Telephones Cables Ltd Arrangement for producing electric impulses

Also Published As

Publication number Publication date
GB334516A (en) 1930-08-29
GB334205A (en) 1930-08-29
GB372435A (en) 1932-05-12
GB366644A (en) 1932-02-11

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