US2624541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly valve
Assignee: Askania Regulator Co
•
Filing: 1946-11-29
•
Granted: 1953-01-06
•
Expires: 1966-11-29
Abstract
No abstract record available.
Inventors
- 👤 Ziebolz Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:36
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US373848A
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US616252A
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US808397A
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US904497A
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CH59987A
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US1173484A
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US1239391A
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US1528479A
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US1613897A
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US1973842A
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US2358260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |