US2809596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized reservoir for cavitationfree supply to pump
Assignee: North American Aviation Corp
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Filing: 1954-06-09
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Granted: 1957-10-15
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Expires: 1974-06-09
Abstract
No abstract record available.
Inventors
- 👤 Richard H Sullwold
- 👤 Louis E Berthelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:33
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/26; F15B1/265; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86035
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) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |