US2946186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced regulator valve
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1956-02-10
•
Granted: 1960-07-26
•
Expires: 1976-02-10
Abstract
No abstract record available.
Inventors
- 👤 Donald L Southam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:45
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7782; Y10T137/7784; Y10T137/7787; Y10T137/7788
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1538427A
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US2026704A
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DE746386C
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US2398201A
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US2470564A
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US2505798A
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US2545703A
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US2763126A
Cited
US2708342A
Cited
US2743577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |