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US2662956A
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Manometric accelerometer
Assignee: Northrop Grumman Corp
•
Filing: 1952-05-03
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Granted: 1953-12-15
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Expires: 1972-05-03
Abstract
No abstract record available.
Inventors
- 👤 Robert E Bareford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:32
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/20; G01C9/22; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/12; G01P15/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317072A
Cited
US2067467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |