US2574624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve mechanism
Assignee: Individual
•
Filing: 1948-06-25
•
Granted: 1951-11-13
•
Expires: 1968-06-25
Abstract
No abstract record available.
Inventors
- 👤 John D Cochin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:10
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87064; Y10T137/87096; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20201; Y10T74/20576; Y10T74/20582; Y10T74/20612
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US746896A
Cited
US1353977A
Cited
US1632417A
Cited
US1764005A
Cited
US1843425A
Cited
US2286432A
Cited
US2231858A
Cited
US2462544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |