FR664666A - Perfectionnements apportés aux envoyeurs d'impulsion du type comportant un disque à doigt - Google Patents

Perfectionnements apportés aux envoyeurs d'impulsion du type comportant un disque à doigt

Info

Publication number
FR664666A
FR664666A FR664666DA FR664666A FR 664666 A FR664666 A FR 664666A FR 664666D A FR664666D A FR 664666DA FR 664666 A FR664666 A FR 664666A
Authority
FR
France
Prior art keywords
type
improvements made
finger disc
senders
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
Other languages
English (en)
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 FR664666A publication Critical patent/FR664666A/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
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
FR664666D 1927-11-29 1928-11-27 Perfectionnements apportés aux envoyeurs d'impulsion du type comportant un disque à doigt Expired FR664666A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE301424X 1927-11-29

Publications (1)

Publication Number Publication Date
FR664666A true FR664666A (fr) 1929-09-06

Family

ID=20307433

Family Applications (1)

Application Number Title Priority Date Filing Date
FR664666D Expired FR664666A (fr) 1927-11-29 1928-11-27 Perfectionnements apportés aux envoyeurs d'impulsion du type comportant un disque à doigt

Country Status (3)

Country Link
BE (1) BE356228A (fr)
FR (1) FR664666A (fr)
GB (1) GB301424A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774823A (en) * 1951-12-21 1956-12-18 Maynez Pedro Salinas Selective electrical dialing system

Also Published As

Publication number Publication date
GB301424A (en) 1929-09-26
BE356228A (fr)

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