US2892609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound-movement butterfly valve
Assignee: Individual
•
Filing: 1956-07-31
•
Granted: 1959-06-30
•
Expires: 1976-07-31
Abstract
No abstract record available.
Inventors
- 👤 Bibbo Carmen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:58
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US676526A
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US955948A
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US1577900A
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FR605688A
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US1669119A
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US2059656A
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FR831862A
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US2655942A
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FR1008139A
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US2612338A
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US2673061A
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GB746909A
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US2773510A
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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) | 1962-06-29 | 1962-12-29 | 1963-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-29 | 1966-12-29 | 1967-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-29 | 1970-12-29 | 1971-06-30 | $7700.00 | Window Closed / Lapsed |