Patent US2038071A successfully refreshed from Google Patents.
US2038071A
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Fluid treating device
Assignee: PATENT FINANCE Corp
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Filing: 1932-11-09
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Granted: 1936-04-21
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Expires: 1952-11-09
Abstract
No abstract record available.
Inventors
- 👤 Warner F Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:31
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/525; B01D46/527; B01D46/0027; B01D46/0038; B01D53/00; B01D53/02; B01D2253/00; B01D2253/30; B01D2253/34; B01D2275/00; B01D2275/10; B01D2275/105; F; F24; F24F; F24F2203/00; F24F2203/10; F24F2203/1032; F24F2203/1036
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) | 1939-04-21 | 1939-10-21 | 1940-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-04-21 | 1943-10-21 | 1944-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-04-21 | 1947-10-21 | 1948-04-21 | $7700.00 | Window Closed / Lapsed |