CA214150A - Bifocal lens - Google Patents
Bifocal lensInfo
- Publication number
- CA214150A CA214150A CA214150A CA214150DA CA214150A CA 214150 A CA214150 A CA 214150A CA 214150 A CA214150 A CA 214150A CA 214150D A CA214150D A CA 214150DA CA 214150 A CA214150 A CA 214150A
- 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 |
---|---|---|---|
CA214150T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA214150A true CA214150A (en) | 1921-11-08 |
Family
ID=35108594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA214150A Expired CA214150A (en) | Bifocal lens |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA214150A (en) |
-
0
- CA CA214150A patent/CA214150A/en not_active Expired
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