Patent US2911994A successfully refreshed from Google Patents.
US2911994A
Expired / Lapsed
US
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Automatic dump valve
Assignee: LESTER L BRANSON
•
Filing: 1955-05-10
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Granted: 1959-11-10
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Expires: 1975-05-10
Abstract
No abstract record available.
Inventors
- 👤 Sadie E Branson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:56
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/126; F16K31/1266; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/5196
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US518000A
Cited
US602170A
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US1146832A
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US1361278A
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US1498024A
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US2599872A
Cited
US2648490A
Cited
US2631600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |