Patent US2503523A successfully refreshed from Google Patents.
US2503523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cleaning wet wheel
Assignee: Individual
•
Filing: 1945-01-17
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Granted: 1950-04-11
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Expires: 1965-01-17
Abstract
No abstract record available.
Inventors
- 👤 William W Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:30
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/21; B01F23/213; B01F23/2131; F; F24; F24F; F24F6/00; F24F6/02; F24F6/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |