US2270540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating liquids
Assignee: Individual
•
Filing: 1938-02-16
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Granted: 1942-01-20
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Expires: 1958-02-16
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm E Mallory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:46
CPC Classifications
A; A23; A23B; A23B11/00; A23B11/10; A23B11/12; A23B11/13; A23B11/133; A23B2/00; A23B2/40; A23B2/42; A23B2/46; A61; A61D; A61D1/00; F; F28; F28D; F28D7/00; F28D7/02; F28D7/024; F28F; F28F13/00; F28F13/02
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) | 1945-01-19 | 1945-07-21 | 1946-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-01-19 | 1949-07-21 | 1950-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-01-19 | 1953-07-21 | 1954-01-20 | $7700.00 | Window Closed / Lapsed |