US2907148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrading wheels
Assignee: Chicago Wheel and Manufacturing Co
•
Filing: 1956-10-23
•
Granted: 1959-10-06
•
Expires: 1976-10-23
Abstract
No abstract record available.
Inventors
- 👤 Vernal L Sheets
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:00
CPC Classifications
B; B24; B24D; B24D18/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US201910A
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US1458772A
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US1499345A
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US2281525A
Cited
US2248990A
Cited
US2324377A
Cited
US2479079A
Cited
US2454068A
Cited
US2763970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |