US3427930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve actuator
Assignee: Fisher Governor Co
•
Filing: 1965-07-02
•
Granted: 1969-02-18
•
Expires: 1985-07-02
Abstract
No abstract record available.
Inventors
- 👤 Bob R Roberts
- 👤 William A Etter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:31
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; F16K31/1221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US192924A
Cited
GB198476A
Cited
US2469038A
Cited
US2580433A
Cited
US2922432A
Cited
US3064675A
Cited
US3289694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |