CA221399A - Bifocal lens - Google Patents
Bifocal lensInfo
- Publication number
- CA221399A CA221399A CA221399A CA221399DA CA221399A CA 221399 A CA221399 A CA 221399A CA 221399 A CA221399 A CA 221399A CA 221399D A CA221399D A CA 221399DA CA 221399 A CA221399 A CA 221399A
- 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 |
---|---|---|---|
CA221399T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA221399A true CA221399A (en) | 1922-07-25 |
Family
ID=35117002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA221399A Expired CA221399A (en) | Bifocal lens |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA221399A (en) |
-
0
- CA CA221399A patent/CA221399A/en not_active Expired
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