Patent DE2830690C2 successfully refreshed from Google Patents.
US2507545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic shutoff valve for fuel nozzles
Assignee: Individual
•
Filing: 1948-04-22
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Granted: 1950-05-16
•
Expires: 1968-04-22
Abstract
No abstract record available.
Inventors
- 👤 Samiran David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:26
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K21/18; F16K21/20; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7423
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1906277A
Cited
US2420341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |