Patent US2499643A successfully refreshed from Google Patents.
US2499643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polishing wheel
Assignee: Individual
•
Filing: 1948-07-31
•
Granted: 1950-03-07
•
Expires: 1968-07-31
Abstract
No abstract record available.
Inventors
- 👤 Hays Dora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:13
CPC Classifications
B; B24; B24D; B24D9/00; B24D9/02; Y; Y10; Y10T; Y10T407/00; Y10T407/18; Y10T407/1815
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US11396A
Cited
US186205A
Cited
US426862A
Cited
US574763A
Cited
US1110804A
Cited
US1739271A
Cited
US1939711A
Cited
US1965707A
Cited
US2410536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |