US3001745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic shut-off valves
Assignee: English Electric Co Ltd
•
Filing: 1957-12-23
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Granted: 1961-09-26
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Expires: 1977-12-23
Abstract
No abstract record available.
Inventors
- 👤 Saunders Ronald Alexander
- 👤 Simmons Anthony Thoma Frederic
- 👤 Snell Reginald John Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:22
CPC Classifications
B; B64; B64D; B64D13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |