GB8427328D0 - Photochromic active optical filters - Google Patents
Photochromic active optical filtersInfo
- Publication number
- GB8427328D0 GB8427328D0 GBGB8427328.3A GB8427328A GB8427328D0 GB 8427328 D0 GB8427328 D0 GB 8427328D0 GB 8427328 A GB8427328 A GB 8427328A GB 8427328 D0 GB8427328 D0 GB 8427328D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- optical filters
- active optical
- photochromic active
- photochromic
- filters
- 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.)
- Pending
Links
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB8427328.3A GB8427328D0 (en) | 1984-10-29 | 1984-10-29 | Photochromic active optical filters |
GB8526601A GB2310049B (en) | 1984-10-29 | 1985-10-29 | Surveillance apparatus incorporating photchromic active optical filters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB8427328.3A GB8427328D0 (en) | 1984-10-29 | 1984-10-29 | Photochromic active optical filters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB8427328D0 true GB8427328D0 (en) | 1996-09-25 |
Family
ID=10568920
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB8427328.3A Pending GB8427328D0 (en) | 1984-10-29 | 1984-10-29 | Photochromic active optical filters |
GB8526601A Expired - Fee Related GB2310049B (en) | 1984-10-29 | 1985-10-29 | Surveillance apparatus incorporating photchromic active optical filters |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8526601A Expired - Fee Related GB2310049B (en) | 1984-10-29 | 1985-10-29 | Surveillance apparatus incorporating photchromic active optical filters |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB8427328D0 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1265564A (en) * | 1969-07-17 | 1972-03-01 | ||
US4069168A (en) * | 1976-10-01 | 1978-01-17 | Ppg Industries, Inc. | Tungsten hexacarbonyl in plastic lenses |
-
1984
- 1984-10-29 GB GBGB8427328.3A patent/GB8427328D0/en active Pending
-
1985
- 1985-10-29 GB GB8526601A patent/GB2310049B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2310049A (en) | 1997-08-13 |
GB2310049B (en) | 1998-01-07 |
GB8526601D0 (en) | 1996-10-02 |
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