FR681192A - Advanced training in watchmakers' loupes - Google Patents

Advanced training in watchmakers' loupes

Info

Publication number
FR681192A
FR681192A FR681192DA FR681192A FR 681192 A FR681192 A FR 681192A FR 681192D A FR681192D A FR 681192DA FR 681192 A FR681192 A FR 681192A
Authority
FR
France
Prior art keywords
watchmakers
loupes
advanced training
training
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
George David Horning
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 FR681192A publication Critical patent/FR681192A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/08—Auxiliary lenses; Arrangements for varying focal length
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C9/00—Attaching auxiliary optical parts
    • G02C9/04—Attaching auxiliary optical parts by fitting over or clamping on

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Health & Medical Sciences (AREA)
FR681192D 1929-09-02 1929-09-02 Advanced training in watchmakers' loupes Expired FR681192A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR681192T 1929-09-02

Publications (1)

Publication Number Publication Date
FR681192A true FR681192A (en) 1930-05-12

Family

ID=9022694

Family Applications (1)

Application Number Title Priority Date Filing Date
FR681192D Expired FR681192A (en) 1929-09-02 1929-09-02 Advanced training in watchmakers' loupes

Country Status (1)

Country Link
FR (1) FR681192A (en)

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