US2970609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shut-off valve
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1958-01-07
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Granted: 1961-02-07
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Expires: 1978-01-07
Abstract
No abstract record available.
Inventors
- 👤 Donald G Beremand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:40
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7788; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/8593; Y10T137/87917; Y10T137/88046
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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |