US3545837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sighting interlock
Assignee: Raytheon Co
•
Filing: 1968-12-09
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Granted: 1970-12-08
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Expires: 1988-12-09
Abstract
No abstract record available.
Inventors
- 👤 Arthur S Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:37
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/30; F41G7/301; F41G7/303; F41G1/00; F41G1/38; F41G1/393; F41G1/3935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US499532A
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GB574117A
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US1398688A
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GB448250A
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GB459337A
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US2335286A
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US2360850A
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FR892845A
Cited
US3263567A
Cited
US3316808A
Cited
US3424052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |