US2980089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve operating means and control
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1959-08-26
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Granted: 1961-04-18
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Expires: 1979-08-26
Abstract
No abstract record available.
Inventors
- 👤 Achilles C Sampietro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:28
CPC Classifications
F; F01; F01L; F01L13/00; F01L13/0015; F01L13/0036; F01L13/0042; F01L1/00; F01L1/12; F01L1/18; F01L1/181; F01L1/182; F01L1/183; F01L2013/0078; F01L2820/00; F01L2820/03; F01L2820/035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |