CA117950A - Methode de production de lentilles bifocales - Google Patents

Methode de production de lentilles bifocales

Info

Publication number
CA117950A
CA117950A CA000117950A CA117950DA CA117950A CA 117950 A CA117950 A CA 117950A CA 000117950 A CA000117950 A CA 000117950A CA 117950D A CA117950D A CA 117950DA CA 117950 A CA117950 A CA 117950A
Authority
CA
Canada
Prior art keywords
producting
bifocal lenses
bifocal
lenses
producting bifocal
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
CA000117950A
Other languages
English (en)
Inventor
Charles W. Connor
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA117950A publication Critical patent/CA117950A/fr
Expired legal-status Critical Current

Links

CA000117950A 1907-08-23 1907-08-23 Methode de production de lentilles bifocales Expired CA117950A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA117950T 1907-08-23

Publications (1)

Publication Number Publication Date
CA117950A true CA117950A (fr) 1909-04-27

Family

ID=45237674

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000117950A Expired CA117950A (fr) 1907-08-23 1907-08-23 Methode de production de lentilles bifocales

Country Status (1)

Country Link
CA (1) CA117950A (fr)

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