Patent US2611602A successfully refreshed from Google Patents.
US2611602A
Expired / Lapsed
US
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Centrifugal operating device
Assignee: Iron Fireman Manufacturing Co
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Filing: 1948-04-16
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Granted: 1952-09-23
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Expires: 1968-04-16
Abstract
No abstract record available.
Inventors
- 👤 Walter A Rosebraugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:34
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/06; H01H35/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE626089C
Cited
US1600788A
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US1840996A
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US1926339A
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US2048494A
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US2083343A
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US2095755A
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US2177063A
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US2318187A
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US2465332A
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US2544791A
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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) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |