US2070201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dehydrating pulps
Assignee: DE WITT VAN EVERA
•
Filing: 1934-05-26
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Granted: 1937-02-09
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Expires: 1954-05-26
Abstract
No abstract record available.
Inventors
- 👤 James F Geary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:07
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/28; B01D21/283; B01D21/0012; B01D21/0024; B01D21/10; B01D21/24; B01D21/245; B01D29/00; B01D29/11; B01D29/117; B01D29/118; B01D29/62; B01D29/70; B01D29/72; B01D2201/00; B01D2201/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-02-09 | 1940-08-10 | 1941-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-02-09 | 1944-08-10 | 1945-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-02-09 | 1948-08-10 | 1949-02-09 | $7700.00 | Window Closed / Lapsed |