US2442639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft booster pump and tank assembly
Assignee: CURTIS PUMP CO
•
Filing: 1943-03-08
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Granted: 1948-06-01
•
Expires: 1963-03-08
Abstract
No abstract record available.
Inventors
- 👤 Russell R Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:46
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/20; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/16; F02B; F02B1/00; F02M37/04; F02M37/08; F02M37/10; F02M37/106; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/438; F02M2700/4388; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-01 | 1951-12-01 | 1952-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-01 | 1955-12-01 | 1956-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-01 | 1959-12-01 | 1960-06-01 | $7700.00 | Window Closed / Lapsed |