US3457950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sluice valves
Assignee: Kinematics Ltd
•
Filing: 1967-06-07
•
Granted: 1969-07-29
•
Expires: 1987-06-07
Abstract
No abstract record available.
Inventors
- 👤 Charles E Over
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:14
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/28; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA520456A
Cited
GB189619005A
Cited
US2290251A
Cited
DE1133195B
Cited
US2911188A
Cited
GB907319A
Cited
US3260498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |