FR751737A - Advanced telephone call dial device - Google Patents

Advanced telephone call dial device

Info

Publication number
FR751737A
FR751737A FR751737DA FR751737A FR 751737 A FR751737 A FR 751737A FR 751737D A FR751737D A FR 751737DA FR 751737 A FR751737 A FR 751737A
Authority
FR
France
Prior art keywords
telephone call
dial device
call dial
advanced telephone
advanced
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)
Inventor
Marcel De Font-Reaulx
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 filed Critical
Application granted granted Critical
Publication of FR751737A publication Critical patent/FR751737A/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)
FR751737D 1933-03-02 1933-03-02 Advanced telephone call dial device Expired FR751737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR751737T 1933-03-02

Publications (1)

Publication Number Publication Date
FR751737A true FR751737A (en) 1933-09-08

Family

ID=9156038

Family Applications (1)

Application Number Title Priority Date Filing Date
FR751737D Expired FR751737A (en) 1933-03-02 1933-03-02 Advanced telephone call dial device

Country Status (1)

Country Link
FR (1) FR751737A (en)

Similar Documents

Publication Publication Date Title
FR751737A (en) Advanced telephone call dial device
FR778759A (en) Telephone call dial lighting device
FR719750A (en) Call device for automatic telephone
FR884258A (en) Telephone call dial
FR768036A (en) Automatic Telephone Call Dial Recorder
FR776938A (en) Radiotelegraph and radiotelephone call device
FR799121A (en) Accessory for telephone call dial
FR777885A (en) Service call device
FR758822A (en) Call device for telephone sets
FR759776A (en) Call dial
FR765736A (en) Device facilitating the observation of the duration of telephone calls
FR765932A (en) Call device for automatic telephony
FR758566A (en) Evacuation device
FR816060A (en) Recording device for call dial telephone devices
FR756262A (en) Device for counting telephone calls
FR793466A (en) Improvements to automatic telephone call dials
FR723192A (en) Automatic telephone call device
FR754843A (en) Telephone communication counter device
FR756825A (en) Portable tutor for telephone receiver
FR757570A (en) Call device for watertight stations
FR758771A (en) Clock with dial lighting device
FR752027A (en) Metal scaffolding device
FR778392A (en) Device indicating the time and duration of telephone calls
FR797637A (en) Call diverting device
FR593514A (en) Dial call device