US3434694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanisms
Assignee: UMEC Corp
•
Filing: 1966-03-30
•
Granted: 1969-03-25
•
Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 Harvey G Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:43
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/02; F16K1/04; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6065; Y10T137/6089; Y10T137/6106; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1228585A
Cited
US1406748A
Cited
US2194961A
Cited
US2621677A
Cited
US2895495A
Cited
GB924710A
Cited
US3338549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |