Patent US2976240A successfully refreshed from Google Patents.
US2984472A
Expired / Lapsed
US
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Drying machine
Assignee: Industrial Heat Engineering Co
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Filing: 1957-07-19
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Granted: 1961-05-16
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Expires: 1977-07-19
Abstract
No abstract record available.
Inventors
- 👤 George M Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:02
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/18; F26B13/183; F26B13/186; D; D21; D21F; D21F5/00; D21F5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US484968A
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US1168171A
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US1240468A
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US1819534A
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US2352444A
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US2622343A
Cited
US2684544A
Cited
US2722761A
Cited
US2763477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |