CA493831A - Ultra-violet filter on photographic layers - Google Patents
Ultra-violet filter on photographic layersInfo
- Publication number
- CA493831A CA493831A CA493831A CA493831DA CA493831A CA 493831 A CA493831 A CA 493831A CA 493831 A CA493831 A CA 493831A CA 493831D A CA493831D A CA 493831DA CA 493831 A CA493831 A CA 493831A
- Authority
- CA
- Canada
- Prior art keywords
- ultra
- photographic layers
- violet filter
- violet
- filter
- 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 |
|---|---|---|---|
| CA493831T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA493831A true CA493831A (en) | 1953-06-23 |
Family
ID=35639223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA493831A Expired CA493831A (en) | Ultra-violet filter on photographic layers |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA493831A (en) |
-
0
- CA CA493831A patent/CA493831A/en not_active Expired
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