FR368206A - Compteur de durée des conversations téléphoniques - Google Patents

Compteur de durée des conversations téléphoniques

Info

Publication number
FR368206A
FR368206A FR368206DA FR368206A FR 368206 A FR368206 A FR 368206A FR 368206D A FR368206D A FR 368206DA FR 368206 A FR368206 A FR 368206A
Authority
FR
France
Prior art keywords
time counter
telephone conversation
conversation time
telephone
counter
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)
Inventor
John E. Rounsevill
August Bilms
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.)
JOHN E ROUNSEVILL
Original Assignee
JOHN E ROUNSEVILL
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 JOHN E ROUNSEVILL filed Critical JOHN E ROUNSEVILL
Application granted granted Critical
Publication of FR368206A publication Critical patent/FR368206A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/02—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms
    • G04F3/022—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms using mechanical signalling device

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR368206D 1906-07-19 1906-07-19 Compteur de durée des conversations téléphoniques Expired FR368206A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR368206T 1906-07-19

Publications (1)

Publication Number Publication Date
FR368206A true FR368206A (fr) 1906-11-22

Family

ID=1415289

Family Applications (1)

Application Number Title Priority Date Filing Date
FR368206D Expired FR368206A (fr) 1906-07-19 1906-07-19 Compteur de durée des conversations téléphoniques

Country Status (1)

Country Link
FR (1) FR368206A (fr)

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