CA386431A - Verre bifocal - Google Patents

Verre bifocal

Info

Publication number
CA386431A
CA386431A CA386431A CA386431DA CA386431A CA 386431 A CA386431 A CA 386431A CA 386431 A CA386431 A CA 386431A CA 386431D A CA386431D A CA 386431DA CA 386431 A CA386431 A CA 386431A
Authority
CA
Canada
Prior art keywords
focal lens
focal
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
CA386431A
Other languages
English (en)
Inventor
Slotsky David
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 CA386431A publication Critical patent/CA386431A/fr
Expired legal-status Critical Current

Links

CA386431A Verre bifocal Expired CA386431A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA386431T

Publications (1)

Publication Number Publication Date
CA386431A true CA386431A (fr) 1940-01-23

Family

ID=35391652

Family Applications (1)

Application Number Title Priority Date Filing Date
CA386431A Expired CA386431A (fr) Verre bifocal

Country Status (1)

Country Link
CA (1) CA386431A (fr)

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