Patent US2931107A successfully refreshed from Google Patents.
US2931107A
Expired / Lapsed
US
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Drying apparatus
Assignee: Wyeth Holdings LLC
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Filing: 1956-02-13
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Granted: 1960-04-05
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Expires: 1976-02-13
Abstract
No abstract record available.
Inventors
- 👤 William N Sellers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:52
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; D; D02; D02J; D02J13/00; D02J13/005; D21; D21F; D21F5/00; D21F5/02; F26B13/06; F26B13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1094195A
Cited
US1578298A
Cited
US1635765A
Cited
US1890833A
Cited
US2344686A
Cited
US2643099A
Cited
US2812594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |