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Patent US3485476A successfully refreshed from Google Patents.
US3485476A
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US
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Butterfly valve
Assignee: Fisher Governor Co
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Filing: 1966-09-19
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Granted: 1969-12-23
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Expires: 1986-09-19
Abstract
No abstract record available.
Inventors
- 👤 James E Hemphill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:58
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA30566A
Cited
FR759325A
Cited
US2095263A
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US2271390A
Cited
US3049335A
Cited
FR1233654A
Cited
US3141470A
Cited
US3143132A
Cited
US3176704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |