CA227548A - Lentille bifocale - Google Patents

Lentille bifocale

Info

Publication number
CA227548A
CA227548A CA227548A CA227548DA CA227548A CA 227548 A CA227548 A CA 227548A CA 227548 A CA227548 A CA 227548A CA 227548D A CA227548D A CA 227548DA CA 227548 A CA227548 A CA 227548A
Authority
CA
Canada
Prior art keywords
lense
bifocal
bifocal lense
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
CA227548A
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA227548A publication Critical patent/CA227548A/fr
Expired legal-status Critical Current

Links

CA227548A Lentille bifocale Expired CA227548A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA227548T

Publications (1)

Publication Number Publication Date
CA227548A true CA227548A (fr) 1923-01-02

Family

ID=35123151

Family Applications (1)

Application Number Title Priority Date Filing Date
CA227548A Expired CA227548A (fr) Lentille bifocale

Country Status (1)

Country Link
CA (1) CA227548A (fr)

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