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FR423478A - Perfectionnements apportés aux pince-nez, lorgnons ou lunettes bifocales - Google Patents

Perfectionnements apportés aux pince-nez, lorgnons ou lunettes bifocales

Info

Publication number
FR423478A
FR423478A FR423478DA FR423478A FR 423478 A FR423478 A FR 423478A FR 423478D A FR423478D A FR 423478DA FR 423478 A FR423478 A FR 423478A
Authority
FR
France
Prior art keywords
eyeglasses
improvements made
nose clips
bifocal glasses
bifocal
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
Oliver Imray
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR423478A publication Critical patent/FR423478A/fr
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
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR423478D 1910-12-08 1910-12-08 Perfectionnements apportés aux pince-nez, lorgnons ou lunettes bifocales Expired FR423478A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR423478T 1910-12-08

Publications (1)

Publication Number Publication Date
FR423478A true FR423478A (fr) 1911-04-19

Family

ID=1466318

Family Applications (1)

Application Number Title Priority Date Filing Date
FR423478D Expired FR423478A (fr) 1910-12-08 1910-12-08 Perfectionnements apportés aux pince-nez, lorgnons ou lunettes bifocales

Country Status (1)

Country Link
FR (1) FR423478A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863256A (en) * 1988-05-23 1989-09-05 Mcdougald Otis C Eyeglasses with invertable lens carriers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863256A (en) * 1988-05-23 1989-09-05 Mcdougald Otis C Eyeglasses with invertable lens carriers

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