Patent US2307954A successfully refreshed from Google Patents.
US2307954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic oil cleaner
Assignee: Individual
•
Filing: 1941-07-28
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Granted: 1943-01-12
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Expires: 1961-07-28
Abstract
No abstract record available.
Inventors
- 👤 John T Radke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:02
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/28; B01; B01D; B01D35/00; B01D35/06; B03C2201/00; B03C2201/18; F; F16; F16H; F16H57/00; F16H57/04; F16H57/0402; F16H57/0404
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) | 1946-01-11 | 1946-07-13 | 1947-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-11 | 1950-07-13 | 1951-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-11 | 1954-07-13 | 1955-01-12 | $7700.00 | Window Closed / Lapsed |