CA116369A - Bi-focal lens - Google Patents
Bi-focal lensInfo
- Publication number
- CA116369A CA116369A CA000116369A CA116369DA CA116369A CA 116369 A CA116369 A CA 116369A CA 000116369 A CA000116369 A CA 000116369A CA 116369D A CA116369D A CA 116369DA CA 116369 A CA116369 A CA 116369A
- Authority
- CA
- Canada
- Prior art keywords
- focal lens
- focal
- 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 |
---|---|---|---|
CA116369T | 1907-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA116369A true CA116369A (en) | 1909-02-02 |
Family
ID=45236094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000116369A Expired CA116369A (en) | 1907-08-13 | 1907-08-13 | Bi-focal lens |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA116369A (en) |
-
1907
- 1907-08-13 CA CA000116369A patent/CA116369A/en not_active Expired
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