CA217805A - Lens - Google Patents

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Info

Publication number
CA217805A
CA217805A CA217805A CA217805DA CA217805A CA 217805 A CA217805 A CA 217805A CA 217805 A CA217805 A CA 217805A CA 217805D A CA217805D A CA 217805DA CA 217805 A CA217805 A CA 217805A
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
CA217805A
Other languages
French (fr)
Inventor
K. Parsons Harold
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 CA217805A publication Critical patent/CA217805A/en
Expired legal-status Critical Current

Links

CA217805A Lens Expired CA217805A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA217805T

Publications (1)

Publication Number Publication Date
CA217805A true CA217805A (en) 1922-04-18

Family

ID=35112249

Family Applications (1)

Application Number Title Priority Date Filing Date
CA217805A Expired CA217805A (en) Lens

Country Status (1)

Country Link
CA (1) CA217805A (en)

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