CA224473A - Lentille bifocale - Google Patents

Lentille bifocale

Info

Publication number
CA224473A
CA224473A CA224473A CA224473DA CA224473A CA 224473 A CA224473 A CA 224473A CA 224473 A CA224473 A CA 224473A CA 224473D A CA224473D A CA 224473DA CA 224473 A CA224473 A CA 224473A
Authority
CA
Canada
Prior art keywords
bifocal lens
bifocal
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
CA224473A
Other languages
English (en)
Inventor
Roland Walsh Peter
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 CA224473A publication Critical patent/CA224473A/fr
Expired legal-status Critical Current

Links

CA224473A Lentille bifocale Expired CA224473A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA224473T

Publications (1)

Publication Number Publication Date
CA224473A true CA224473A (fr) 1922-10-03

Family

ID=35120076

Family Applications (1)

Application Number Title Priority Date Filing Date
CA224473A Expired CA224473A (fr) Lentille bifocale

Country Status (1)

Country Link
CA (1) CA224473A (fr)

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