CA220469A - Bifocal lens - Google Patents
Bifocal lensInfo
- Publication number
- CA220469A CA220469A CA220469A CA220469DA CA220469A CA 220469 A CA220469 A CA 220469A CA 220469 A CA220469 A CA 220469A CA 220469D A CA220469D A CA 220469DA CA 220469 A CA220469 A CA 220469A
- 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
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA220469T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA220469A true CA220469A (en) | 1922-07-04 |
Family
ID=35114913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA220469A Expired CA220469A (en) | Bifocal lens |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA220469A (en) |
-
0
- CA CA220469A patent/CA220469A/en not_active Expired
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