CA343541A - Lentille a double foyer - Google Patents

Lentille a double foyer

Info

Publication number
CA343541A
CA343541A CA343541A CA343541DA CA343541A CA 343541 A CA343541 A CA 343541A CA 343541 A CA343541 A CA 343541A CA 343541D A CA343541D A CA 343541DA CA 343541 A CA343541 A CA 343541A
Authority
CA
Canada
Prior art keywords
bifocal lens
bifocal
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
CA343541A
Other languages
English (en)
Inventor
R. Uhlemann William
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
Publication date
Application granted granted Critical
Publication of CA343541A publication Critical patent/CA343541A/fr
Expired legal-status Critical Current

Links

CA343541A Lentille a double foyer Expired CA343541A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA343541T

Publications (1)

Publication Number Publication Date
CA343541A true CA343541A (fr) 1934-07-31

Family

ID=35314814

Family Applications (1)

Application Number Title Priority Date Filing Date
CA343541A Expired CA343541A (fr) Lentille a double foyer

Country Status (1)

Country Link
CA (1) CA343541A (fr)

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