US2811314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum control valve
Assignee: Dole Valve Co
•
Filing: 1953-05-14
•
Granted: 1957-10-29
•
Expires: 1973-05-14
Abstract
No abstract record available.
Inventors
- 👤 James K Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:58
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/18; G05D16/185; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE501449C
Cited
GB190123138A
Cited
GB524077A
Cited
US2284561A
Cited
US2353692A
Cited
US2486573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |