US2949924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid proportioning device
Assignee: Individual
•
Filing: 1958-02-03
•
Granted: 1960-08-23
•
Expires: 1978-02-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur Melvin Cochran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:57
CPC Classifications
F; F04; F04C; F04C11/00; F04C11/001; F15; F15B; F15B11/00; F15B11/16; F15B11/22; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR766435A
Cited
US2344465A
Cited
US2567997A
Cited
US2541405A
Cited
US2755740A
Cited
US2724341A
Cited
US2878753A
Cited
US2873889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |