US2934310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tight closing butterfly valve
Assignee: SP Kinney Engineers Inc
•
Filing: 1955-11-02
•
Granted: 1960-04-26
•
Expires: 1975-11-02
Abstract
No abstract record available.
Inventors
- 👤 Selwyne P Kinney
- 👤 Cornelius J Garrigan
- 👤 Ward W Clarke
- 👤 Hugh B Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:10
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US373000A
Cited
US1213513A
Cited
FR496005A
Cited
US1504288A
Cited
FR605688A
Cited
GB621195A
Cited
US2655942A
Cited
US2673061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |