CA214972A - Lens - Google Patents

Lens

Info

Publication number
CA214972A
CA214972A CA214972A CA214972DA CA214972A CA 214972 A CA214972 A CA 214972A CA 214972 A CA214972 A CA 214972A CA 214972D A CA214972D A CA 214972DA CA 214972 A CA214972 A CA 214972A
Authority
CA
Canada
Prior art keywords
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
CA214972A
Other languages
French (fr)
Inventor
D. Tillyer Edgar
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 CA214972A publication Critical patent/CA214972A/en
Expired legal-status Critical Current

Links

CA214972A Lens Expired CA214972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA214972T

Publications (1)

Publication Number Publication Date
CA214972A true CA214972A (en) 1922-01-03

Family

ID=35109416

Family Applications (1)

Application Number Title Priority Date Filing Date
CA214972A Expired CA214972A (en) Lens

Country Status (1)

Country Link
CA (1) CA214972A (en)

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