US2871698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure integrating system
Assignee: Northrop Grumman Corp
•
Filing: 1957-03-01
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Granted: 1959-02-03
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Expires: 1977-03-01
Abstract
No abstract record available.
Inventors
- 👤 Leland W Bagby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:05
CPC Classifications
B; B64; B64D; B64D45/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2443098A
Cited
US2551526A
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US2540807A
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US2390534A
Cited
US2602329A
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US2814198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |