Patent US2995038A successfully refreshed from Google Patents.
US2995038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision torque-balance accelerometer
Assignee: Northrop Grumman Systems Corp
•
Filing: 1956-02-29
•
Granted: 1961-08-08
•
Expires: 1976-02-29
Abstract
No abstract record available.
Inventors
- 👤 Henry E Singleton
- 👤 Harold F Erdley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:46
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/13; G01P15/132
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2020905A
Cited
US2041072A
Cited
US2192148A
Cited
US2193707A
Cited
US2498118A
Cited
US2590184A
Cited
US2697594A
Cited
US2778624A
Cited
US2801097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |