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Patent US2838846A successfully refreshed from Google Patents.
US2838846A
Expired / Lapsed
US
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Tumbler drier
Assignee: Individual
•
Filing: 1954-08-16
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Granted: 1958-06-17
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Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Donald G Cowlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:42
CPC Classifications
D; D06; D06F; D06F95/00; D06F58/00; D06F58/02; D06F58/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US732561A
Cited
US771108A
Cited
US1571703A
Cited
US1664098A
Cited
US2079280A
Cited
US2253047A
Cited
US2393380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |