FR479822A - Pulse transmitter for automatic telephone systems - Google Patents

Pulse transmitter for automatic telephone systems

Info

Publication number
FR479822A
FR479822A FR479822A FR479822DA FR479822A FR 479822 A FR479822 A FR 479822A FR 479822 A FR479822 A FR 479822A FR 479822D A FR479822D A FR 479822DA FR 479822 A FR479822 A FR 479822A
Authority
FR
France
Prior art keywords
telephone systems
automatic telephone
pulse transmitter
transmitter
pulse
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
FR479822A
Other languages
French (fr)
Inventor
Gotthilf Ansgarius Betulander
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR479822A publication Critical patent/FR479822A/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
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)
FR479822A 1915-01-26 1915-09-24 Pulse transmitter for automatic telephone systems Expired FR479822A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE191512671X 1915-01-26

Publications (1)

Publication Number Publication Date
FR479822A true FR479822A (en) 1916-05-17

Family

ID=32679795

Family Applications (1)

Application Number Title Priority Date Filing Date
FR479822A Expired FR479822A (en) 1915-01-26 1915-09-24 Pulse transmitter for automatic telephone systems

Country Status (3)

Country Link
DE (1) DE293208C (en)
FR (1) FR479822A (en)
GB (1) GB191512671A (en)

Also Published As

Publication number Publication date
DE293208C (en)
GB191512671A (en) 1916-05-04

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