US2620892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical dehydrator
Assignee: Individual
•
Filing: 1950-05-05
•
Granted: 1952-12-09
•
Expires: 1970-05-05
Abstract
No abstract record available.
Inventors
- 👤 Stover William Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:32
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01J; B01J2219/00; B01J2219/19; B01J2219/194; B01J2219/1941; B01J2219/1942; Y; Y10; Y10S; Y10S210/00; Y10S210/06; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86348
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1572245A
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US1775362A
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US1839350A
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US1833919A
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US2157829A
Cited
US2283989A
Cited
US2231076A
Cited
US2383065A
Cited
US2489903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |