US2736893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Craft guidance apparatus
Assignee: Sperry Gyroscope Co Ltd
•
Filing: 1951-07-19
•
Granted: 1956-02-28
•
Expires: 1971-07-19
Abstract
No abstract record available.
Inventors
- 👤 Manteuffel Gert Sidney Zoe Von
- 👤 Richardson Colin Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:47
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1999047A
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US2309314A
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US2439044A
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US2395854A
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US2502721A
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US2567922A
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US2592173A
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US2613350A
Cited
US2548278A
Cited
US2613352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |