CA243341A - Fabrication de lentilles bifocales - Google Patents

Fabrication de lentilles bifocales

Info

Publication number
CA243341A
CA243341A CA243341A CA243341DA CA243341A CA 243341 A CA243341 A CA 243341A CA 243341 A CA243341 A CA 243341A CA 243341D A CA243341D A CA 243341DA CA 243341 A CA243341 A CA 243341A
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
CA243341A
Other languages
English (en)
Inventor
W. Bugbee Lucian
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.)
FRANKLIN OPTICAL Co
Original Assignee
FRANKLIN OPTICAL Co
Publication date
Application granted granted Critical
Publication of CA243341A publication Critical patent/CA243341A/fr
Expired legal-status Critical Current

Links

CA243341A Fabrication de lentilles bifocales Expired CA243341A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA243341T

Publications (1)

Publication Number Publication Date
CA243341A true CA243341A (fr) 1924-09-30

Family

ID=35147368

Family Applications (1)

Application Number Title Priority Date Filing Date
CA243341A Expired CA243341A (fr) Fabrication de lentilles bifocales

Country Status (1)

Country Link
CA (1) CA243341A (fr)

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