US2435338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil control valve
Assignee: United Aircraft Products Inc
•
Filing: 1942-12-05
•
Granted: 1948-02-03
•
Expires: 1962-12-05
Abstract
No abstract record available.
Inventors
- 👤 Harry T Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/168; F16K3/00; F16K3/02; F16K3/04; F16K3/06; F16K3/08; F16N; F16N39/00; F16N39/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87338; Y10T137/87362; Y10T137/8737; Y10T137/87515; Y10T137/877; Y10T137/87708
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US231110A
Cited
US1449074A
Cited
GB253233A
Cited
FR621750A
Cited
US2079743A
Cited
US2188801A
Cited
US2127679A
Cited
US2288599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |