US3490830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide-angle optical pick-off
Assignee: KOLLSMAN INSTRUMENTS CORP
•
Filing: 1966-02-02
•
Granted: 1970-01-20
•
Expires: 1986-02-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:03
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/30; G09B9/32; G09B9/326; G02; G02B; G02B23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1209958A
Cited
US1253796A
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US2121255A
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US2669902A
Cited
US2792740A
Cited
US2747460A
Cited
US3164056A
Cited
US3303739A
Cited
US3333053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |