FR690809A - Glass for watchmaking - Google Patents

Glass for watchmaking

Info

Publication number
FR690809A
FR690809A FR690809DA FR690809A FR 690809 A FR690809 A FR 690809A FR 690809D A FR690809D A FR 690809DA FR 690809 A FR690809 A FR 690809A
Authority
FR
France
Prior art keywords
watchmaking
glass
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
Georges Desprey
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 FR690809A publication Critical patent/FR690809A/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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/004—Watch crystals; Fastening or sealing of crystals; Clock glasses from a material other than glass

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR690809D 1930-02-28 1930-02-28 Glass for watchmaking Expired FR690809A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR690809T 1930-02-28

Publications (1)

Publication Number Publication Date
FR690809A true FR690809A (en) 1930-09-26

Family

ID=9030973

Family Applications (1)

Application Number Title Priority Date Filing Date
FR690809D Expired FR690809A (en) 1930-02-28 1930-02-28 Glass for watchmaking

Country Status (1)

Country Link
FR (1) FR690809A (en)

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