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FR775815A - Lentil enhancements - Google Patents

Lentil enhancements

Info

Publication number
FR775815A
FR775815A FR775815DA FR775815A FR 775815 A FR775815 A FR 775815A FR 775815D A FR775815D A FR 775815DA FR 775815 A FR775815 A FR 775815A
Authority
FR
France
Prior art keywords
lentil
enhancements
lentil enhancements
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
Henry James Birchall
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 FR775815A publication Critical patent/FR775815A/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
    • G02C7/06—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)
FR775815D 1934-07-13 1934-07-13 Lentil enhancements Expired FR775815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR775815T 1934-07-13

Publications (1)

Publication Number Publication Date
FR775815A true FR775815A (en) 1935-01-10

Family

ID=9200658

Family Applications (1)

Application Number Title Priority Date Filing Date
FR775815D Expired FR775815A (en) 1934-07-13 1934-07-13 Lentil enhancements

Country Status (1)

Country Link
FR (1) FR775815A (en)

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