Patent US2942807A successfully refreshed from Google Patents.
US2942807A
Expired / Lapsed
US
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Position stabilized pendulum control apparatus
Assignee: Individual
•
Filing: 1954-07-30
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Granted: 1960-06-28
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Expires: 1974-07-30
Abstract
No abstract record available.
Inventors
- 👤 Charles E Gallagher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:29
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0816
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2201226A
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US1024398A
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US1485783A
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US1580457A
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US2193707A
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US2352044A
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US2368673A
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US2496100A
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US2579570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |