Patent US2287067A successfully refreshed from Google Patents.
US2287067A
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Method of mechanically changing characteristics of liquids
Assignee: UNIVERSAL ROYALTY AND DEV COMP
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Filing: 1938-03-17
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Granted: 1942-06-23
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Expires: 1958-03-17
Abstract
No abstract record available.
Inventors
- 👤 Hermann H Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:58
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/27; B01F27/272; B01J; B01J19/00; B01J19/18; B01J19/1806; C; C10; C10G; C10G31/00; D; D21; D21B; D21B1/00; D21B1/04; D21B1/12; B01F25/00; B01F2025/91
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) | 1945-06-22 | 1945-12-22 | 1946-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-06-22 | 1949-12-22 | 1950-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-06-22 | 1953-12-22 | 1954-06-23 | $7700.00 | Window Closed / Lapsed |