US2478804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal drier
Assignee: ROBERT HARTLEY SHERWOOD
•
Filing: 1946-08-06
•
Granted: 1949-08-09
•
Expires: 1966-08-06
Abstract
No abstract record available.
Inventors
- 👤 Ray G Baughman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:37
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/12; F26B17/14; F26B17/1433; F26B17/1466; F26B17/1483; F26B17/122; F26B17/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US127256A
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US230525A
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FR469434A
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FR19335E
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US1515257A
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US1558119A
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US1718243A
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US2049071A
Cited
FR728227A
Cited
US2049199A
Cited
US2361151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-08 | 1953-02-07 | 1953-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-08 | 1957-02-07 | 1957-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-08 | 1961-02-07 | 1961-08-09 | $7700.00 | Window Closed / Lapsed |