FR733549A - émetteur d'impulsions de courant à clavier - Google Patents

émetteur d'impulsions de courant à clavier

Info

Publication number
FR733549A
FR733549A FR733549DA FR733549A FR 733549 A FR733549 A FR 733549A FR 733549D A FR733549D A FR 733549DA FR 733549 A FR733549 A FR 733549A
Authority
FR
France
Prior art keywords
keypad
current pulse
pulse transmitter
transmitter
current
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
English (en)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of FR733549A publication Critical patent/FR733549A/fr
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)
FR733549D 1931-03-16 1932-03-15 émetteur d'impulsions de courant à clavier Expired FR733549A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE733549X 1931-03-16

Publications (1)

Publication Number Publication Date
FR733549A true FR733549A (fr) 1932-10-07

Family

ID=20319615

Family Applications (1)

Application Number Title Priority Date Filing Date
FR733549D Expired FR733549A (fr) 1931-03-16 1932-03-15 émetteur d'impulsions de courant à clavier

Country Status (3)

Country Link
BE (1) BE387178A (enEXAMPLES)
DE (1) DE599391C (enEXAMPLES)
FR (1) FR733549A (enEXAMPLES)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537188A (en) * 1948-06-14 1951-01-09 Kaelin Pierre Automatic telephone station selector set for transmitting station numbers
US2561298A (en) * 1948-01-30 1951-07-17 Vanheerswynghels Joseph Impulse transmitter for automatic telephone systems

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL100118C (enEXAMPLES) * 1953-10-10
DE2940608C2 (de) * 1979-10-06 1983-11-17 Standard Elektrik Lorenz Ag, 7000 Stuttgart Fernsprechapparat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561298A (en) * 1948-01-30 1951-07-17 Vanheerswynghels Joseph Impulse transmitter for automatic telephone systems
US2537188A (en) * 1948-06-14 1951-01-09 Kaelin Pierre Automatic telephone station selector set for transmitting station numbers

Also Published As

Publication number Publication date
DE599391C (de) 1934-07-11
BE387178A (enEXAMPLES)

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