US2719518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic valve
Assignee: Individual
•
Filing: 1954-05-04
•
Granted: 1955-10-04
•
Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Lyman B Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:26
CPC Classifications
F; F02; F02M; F02M13/00; F02M13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2675793A
Cited
US1330700A
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US2073282A
Cited
US2073276A
Cited
US2025837A
Cited
US2236032A
Cited
US2355043A
Cited
US2645906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-03 | 1959-04-04 | 1959-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-03 | 1963-04-04 | 1963-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-03 | 1967-04-04 | 1967-10-04 | $7700.00 | Window Closed / Lapsed |