Patent US1994331A successfully refreshed from Google Patents.
US1994331A
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Apparatus for evaporating liquids
Assignee: V D ZEVE Inc
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Filing: 1931-05-13
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Granted: 1935-03-12
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Expires: 1951-05-13
Abstract
No abstract record available.
Inventors
- 👤 Manuel S Ziskin
- 👤 Victor D Zeve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:24
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/0011; B01D1/0017; F; F24; F24H; F24H1/00
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) | 1938-03-11 | 1938-09-10 | 1939-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-03-11 | 1942-09-10 | 1943-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-03-11 | 1946-09-10 | 1947-03-12 | $7700.00 | Window Closed / Lapsed |