US3533595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve operator
Assignee: Ferguson Hille & Associates In
•
Filing: 1968-07-19
•
Granted: 1970-10-13
•
Expires: 1988-07-19
Abstract
No abstract record available.
Inventors
- 👤 Terrence Gizeski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:11
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1708958A
Cited
US2028696A
Cited
US2357502A
Cited
US2584847A
Cited
US2660072A
Cited
FR1132099A
Cited
US2902885A
Cited
US3198034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |