US3606904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Cooper Industries LLC
•
Filing: 1970-03-23
•
Granted: 1971-09-21
•
Expires: 1990-03-23
Abstract
Abstract A VALVE FOR QUICKLY AND AUTOMATICALLY SHIFTING BETWEEN ALTERNATE POSITIONS FOR ADMITTING A SOURCE OF FLUID PRESSURE TO AN OPERATOR AND VENTING THE OPERATOR, RESPECTIVELY, IN RESPONSE TO THE RELATIVE VALUES OF SUPPLY AND OPERATOR PRESSURE.
Inventors
- 👤 William M Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:15
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2559; Y10T137/2574; Y10T137/2579; Y10T137/2582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |