US2921158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic control valve
Assignee: Dole Valve Co
•
Filing: 1958-09-08
•
Granted: 1960-01-12
•
Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 Wesley L Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:07
CPC Classifications
D; D06; D06F; D06F33/00; D06F33/04; D06F33/10; F; F16; F16K; F16K31/00; F16K31/12; F16K31/126; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919; Y10T137/87169; Y10T137/87233; Y10T137/87241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US418405A
Cited
US1722920A
Cited
US2286282A
Cited
US2537308A
Cited
US2590419A
Cited
US2636093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |