CA751142A - Variable light filter - Google Patents
Variable light filterInfo
- Publication number
- CA751142A CA751142A CA751142A CA751142DA CA751142A CA 751142 A CA751142 A CA 751142A CA 751142 A CA751142 A CA 751142A CA 751142D A CA751142D A CA 751142DA CA 751142 A CA751142 A CA 751142A
- Authority
- CA
- Canada
- Prior art keywords
- variable light
- light filter
- filter
- variable
- light
- 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 |
|---|---|---|---|
| CA751142T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA751142A true CA751142A (en) | 1967-01-24 |
Family
ID=36185498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA751142A Expired CA751142A (en) | Variable light filter |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA751142A (en) |
-
0
- CA CA751142A patent/CA751142A/en not_active Expired
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