US3507552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flashblindness protective apparatus
Assignee: United States Department of the Navy
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Filing: 1965-12-01
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Granted: 1970-04-21
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Expires: 1985-12-01
Abstract
No abstract record available.
Inventors
- 👤 Donald D Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:52
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/10; G02C7/102; A; A61; A61F; A61F9/00; A61F9/02; A61F9/022; A61F9/023; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/23; G02C7/02; G02C7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |