US2905071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure control mechanism
Assignee: RTX Corp
•
Filing: 1957-04-23
•
Granted: 1959-09-22
•
Expires: 1977-04-23
Abstract
No abstract record available.
Inventors
- 👤 Rudolph E Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:33
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/02; B64D13/04; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2093; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2621577A
Cited
US2463487A
Cited
US2439793A
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US2590330A
Cited
US2569537A
Cited
US2814241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |