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CA240636A - Lentille bifocale - Google Patents

Lentille bifocale

Info

Publication number
CA240636A
CA240636A CA240636A CA240636DA CA240636A CA 240636 A CA240636 A CA 240636A CA 240636 A CA240636 A CA 240636A CA 240636D A CA240636D A CA 240636DA CA 240636 A CA240636 A CA 240636A
Authority
CA
Canada
Prior art keywords
lense
bifocal
bifocal lense
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
CA240636A
Other languages
English (en)
Inventor
A. Clement George
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.)
GENERAL OPTICAL Co
Original Assignee
GENERAL OPTICAL Co
Publication date
Application granted granted Critical
Publication of CA240636A publication Critical patent/CA240636A/fr
Expired legal-status Critical Current

Links

CA240636A Lentille bifocale Expired CA240636A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA240636T

Publications (1)

Publication Number Publication Date
CA240636A true CA240636A (fr) 1924-06-03

Family

ID=35144667

Family Applications (1)

Application Number Title Priority Date Filing Date
CA240636A Expired CA240636A (fr) Lentille bifocale

Country Status (1)

Country Link
CA (1) CA240636A (fr)

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