US2964061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-way fluid selector valves
Assignee: English Electric Co Ltd
•
Filing: 1957-11-21
•
Granted: 1960-12-13
•
Expires: 1977-11-21
Abstract
No abstract record available.
Inventors
- 👤 Rawson Peter John
- 👤 Chisholm Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/074; F16K11/0743; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86493; Y10T137/86501; Y10T137/86558; Y10T137/86911; Y10T137/87096; Y10T137/87121; Y10T137/87129
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US616827A
Cited
US1842382A
Cited
US2024690A
Cited
US2538215A
Cited
US2688982A
Cited
US2831651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |