US2744335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gravity pendulum device
Assignee: Ambac International Corp
•
Filing: 1951-06-14
•
Granted: 1956-05-08
•
Expires: 1971-06-14
Abstract
No abstract record available.
Inventors
- 👤 Litman Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:49
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/02; G01C9/08; G01C19/00; G01C19/02; G01C19/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR934337A
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US2665499A
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US2552722A
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US2548918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |