CA374359A - Lentille multifocale - Google Patents

Lentille multifocale

Info

Publication number
CA374359A
CA374359A CA374359A CA374359DA CA374359A CA 374359 A CA374359 A CA 374359A CA 374359 A CA374359 A CA 374359A CA 374359D A CA374359D A CA 374359DA CA 374359 A CA374359 A CA 374359A
Authority
CA
Canada
Prior art keywords
multifocal lens
multifocal
lens
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
CA374359A
Other languages
English (en)
Inventor
D. Kinney Fay
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.)
American Optical Corp
Original Assignee
American Optical Corp
Publication date
Application granted granted Critical
Publication of CA374359A publication Critical patent/CA374359A/fr
Expired legal-status Critical Current

Links

CA374359A Lentille multifocale Expired CA374359A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA374359T

Publications (1)

Publication Number Publication Date
CA374359A true CA374359A (fr) 1938-06-14

Family

ID=35378683

Family Applications (1)

Application Number Title Priority Date Filing Date
CA374359A Expired CA374359A (fr) Lentille multifocale

Country Status (1)

Country Link
CA (1) CA374359A (fr)

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