CA247559A - Achromatic bifocal lens - Google Patents
Achromatic bifocal lensInfo
- Publication number
- CA247559A CA247559A CA247559A CA247559DA CA247559A CA 247559 A CA247559 A CA 247559A CA 247559 A CA247559 A CA 247559A CA 247559D A CA247559D A CA 247559DA CA 247559 A CA247559 A CA 247559A
- Authority
- CA
- Canada
- Prior art keywords
- achromatic
- bifocal lens
- bifocal
- lens
- achromatic bifocal
- 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 |
---|---|---|---|
CA247559T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA247559A true CA247559A (en) | 1925-03-10 |
Family
ID=35154533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA247559A Expired CA247559A (en) | Achromatic bifocal lens |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA247559A (en) |
-
0
- CA CA247559A patent/CA247559A/en not_active Expired
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