CA234416A - Fabrication de lentilles bifocales - Google Patents

Fabrication de lentilles bifocales

Info

Publication number
CA234416A
CA234416A CA234416A CA234416DA CA234416A CA 234416 A CA234416 A CA 234416A CA 234416 A CA234416 A CA 234416A CA 234416D A CA234416D A CA 234416DA CA 234416 A CA234416 A CA 234416A
Authority
CA
Canada
Prior art keywords
bifocal lenses
making bifocal
making
lenses
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
CA234416A
Other languages
English (en)
Inventor
Fennell 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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA234416A publication Critical patent/CA234416A/fr
Expired legal-status Critical Current

Links

CA234416A Fabrication de lentilles bifocales Expired CA234416A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA234416T

Publications (1)

Publication Number Publication Date
CA234416A true CA234416A (fr) 1923-09-25

Family

ID=35131790

Family Applications (1)

Application Number Title Priority Date Filing Date
CA234416A Expired CA234416A (fr) Fabrication de lentilles bifocales

Country Status (1)

Country Link
CA (1) CA234416A (fr)

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