US2790090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Displacement sensing system for power plant control
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1954-08-02
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Granted: 1957-04-23
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Expires: 1974-08-02
Abstract
No abstract record available.
Inventors
- 👤 William L Hinde
- 👤 Fred H Guth
- 👤 Stephen H Fairweather
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:56
CPC Classifications
H; H02; H02P; H02P9/00; H02P2101/00; H02P2101/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE17161E
Cited
US2040014A
Cited
US2408070A
Cited
US2504708A
Cited
US2451263A
Cited
US2615658A
Cited
US2662540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |