CA217807A - Lens grinding machinery - Google Patents

Lens grinding machinery

Info

Publication number
CA217807A
CA217807A CA217807A CA217807DA CA217807A CA 217807 A CA217807 A CA 217807A CA 217807 A CA217807 A CA 217807A CA 217807D A CA217807D A CA 217807DA CA 217807 A CA217807 A CA 217807A
Authority
CA
Canada
Prior art keywords
lens grinding
grinding machinery
machinery
lens
grinding
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
CA217807A
Other languages
French (fr)
Inventor
W. Hill Harry
H. Styll Harry
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 CA217807A publication Critical patent/CA217807A/en
Expired legal-status Critical Current

Links

CA217807A Lens grinding machinery Expired CA217807A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA217807T

Publications (1)

Publication Number Publication Date
CA217807A true CA217807A (en) 1922-04-18

Family

ID=35112251

Family Applications (1)

Application Number Title Priority Date Filing Date
CA217807A Expired CA217807A (en) Lens grinding machinery

Country Status (1)

Country Link
CA (1) CA217807A (en)

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