FR580208A - Time projection device - Google Patents

Time projection device

Info

Publication number
FR580208A
FR580208A FR580208DA FR580208A FR 580208 A FR580208 A FR 580208A FR 580208D A FR580208D A FR 580208DA FR 580208 A FR580208 A FR 580208A
Authority
FR
France
Prior art keywords
projection device
time projection
time
projection
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)
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.)
Unitas Watch Co S A
Original Assignee
Unitas Watch Co S A
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 Unitas Watch Co S A filed Critical Unitas Watch Co S A
Application granted granted Critical
Publication of FR580208A publication Critical patent/FR580208A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/34—Position of the hands projected optically

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR580208D 1922-11-11 1923-11-10 Time projection device Expired FR580208A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH580208X 1922-11-11

Publications (1)

Publication Number Publication Date
FR580208A true FR580208A (en) 1924-11-03

Family

ID=4521451

Family Applications (1)

Application Number Title Priority Date Filing Date
FR580208D Expired FR580208A (en) 1922-11-11 1923-11-10 Time projection device

Country Status (1)

Country Link
FR (1) FR580208A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633070A1 (en) * 1988-06-21 1989-12-22 Rigal Isabelle Clock allowing optical projection of the time and projection assembly including such a clock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633070A1 (en) * 1988-06-21 1989-12-22 Rigal Isabelle Clock allowing optical projection of the time and projection assembly including such a clock

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