FR505500A - Automatic device for switching on and off electric lamps - Google Patents

Automatic device for switching on and off electric lamps

Info

Publication number
FR505500A
FR505500A FR505500A FR505500DA FR505500A FR 505500 A FR505500 A FR 505500A FR 505500 A FR505500 A FR 505500A FR 505500D A FR505500D A FR 505500DA FR 505500 A FR505500 A FR 505500A
Authority
FR
France
Prior art keywords
switching
automatic device
electric lamps
lamps
electric
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
FR505500A
Other languages
French (fr)
Inventor
Henri Rozier
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.)
HENRI ROZIER
Original Assignee
HENRI ROZIER
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 HENRI ROZIER filed Critical HENRI ROZIER
Application granted granted Critical
Publication of FR505500A publication Critical patent/FR505500A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR505500A 1919-10-28 1919-10-28 Automatic device for switching on and off electric lamps Expired FR505500A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR505500T 1919-10-28

Publications (1)

Publication Number Publication Date
FR505500A true FR505500A (en) 1920-07-30

Family

ID=8908526

Family Applications (1)

Application Number Title Priority Date Filing Date
FR505500A Expired FR505500A (en) 1919-10-28 1919-10-28 Automatic device for switching on and off electric lamps

Country Status (1)

Country Link
FR (1) FR505500A (en)

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