US3033226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1957-08-26
•
Granted: 1962-05-08
•
Expires: 1977-08-26
Abstract
No abstract record available.
Inventors
- 👤 Earle F Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:15
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/04; F16K5/0421; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/60; Y10T137/6031; Y10T137/8593; Y10T137/86493; Y10T137/86558
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US184573A
Cited
US453109A
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US486722A
Cited
FR671915A
Cited
US2304303A
Cited
US2433732A
Cited
US2644484A
Cited
US2592062A
Cited
US2604293A
Cited
FR1038027A
Cited
US2873086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |