FR477922A - Transmitter for automatic or semi-automatic telephone system - Google Patents

Transmitter for automatic or semi-automatic telephone system

Info

Publication number
FR477922A
FR477922A FR477922A FR477922DA FR477922A FR 477922 A FR477922 A FR 477922A FR 477922 A FR477922 A FR 477922A FR 477922D A FR477922D A FR 477922DA FR 477922 A FR477922 A FR 477922A
Authority
FR
France
Prior art keywords
automatic
transmitter
semi
telephone system
automatic telephone
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
FR477922A
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.)
Relay Automatic Telephone Company Ltd
Original Assignee
Relay Automatic Telephone Company 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 Relay Automatic Telephone Company Ltd filed Critical Relay Automatic Telephone Company Ltd
Application granted granted Critical
Publication of FR477922A publication Critical patent/FR477922A/en
Expired legal-status Critical Current

Links

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
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/272—Devices whereby a plurality of signals may be stored simultaneously with provision for storing only one subscriber number at a time, e.g. by keyboard or dial

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)
  • Telephone Set Structure (AREA)
FR477922A 1914-03-11 1915-03-08 Transmitter for automatic or semi-automatic telephone system Expired FR477922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191406209T 1914-03-11

Publications (1)

Publication Number Publication Date
FR477922A true FR477922A (en) 1915-11-17

Family

ID=32374066

Family Applications (1)

Application Number Title Priority Date Filing Date
FR477922A Expired FR477922A (en) 1914-03-11 1915-03-08 Transmitter for automatic or semi-automatic telephone system

Country Status (3)

Country Link
DE (1) DE322300C (en)
FR (1) FR477922A (en)
GB (1) GB191406209A (en)

Also Published As

Publication number Publication date
GB191406209A (en) 1915-04-12
DE322300C (en) 1920-06-26

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