CA441039A - Light filter - Google Patents
Light filterInfo
- Publication number
- CA441039A CA441039A CA441039A CA441039DA CA441039A CA 441039 A CA441039 A CA 441039A CA 441039 A CA441039 A CA 441039A CA 441039D A CA441039D A CA 441039DA CA 441039 A CA441039 A CA 441039A
- Authority
- CA
- Canada
- Prior art keywords
- light filter
- filter
- 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 |
---|---|---|---|
CA441039T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA441039A true CA441039A (en) | 1947-04-29 |
Family
ID=35556271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA441039A Expired CA441039A (en) | Light filter |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA441039A (en) |
-
0
- CA CA441039A patent/CA441039A/en not_active Expired
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