Patent US3560729A successfully refreshed from Google Patents.
Patent US3105672A successfully refreshed from Google Patents.
US3105672A
Expired / Lapsed
US
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Butterfly valve with a rubber seat
Assignee: SP Kinney Engineers Inc
•
Filing: 1959-04-29
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Granted: 1963-10-01
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Expires: 1979-04-29
Abstract
No abstract record available.
Inventors
- 👤 Selwyne P Kinney
- 👤 Hugh B Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:28
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263; F16K1/2265
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |