US2924237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valve
Assignee: L AND L Manufacturing CO
•
Filing: 1955-06-24
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Granted: 1960-02-09
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Expires: 1975-06-24
Abstract
No abstract record available.
Inventors
- 👤 George S Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:38
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; G05D7/0133; F; F16; F16K; F16K47/00; F16K47/08; F16K47/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7849; Y10T137/8593; Y10T137/87265; Y10T137/87378; Y10T137/87394; Y10T137/87539; Y10T137/87547
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) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |