US2294153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding wheel speed control
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1941-10-23
•
Granted: 1942-08-25
•
Expires: 1961-10-23
Abstract
No abstract record available.
Inventors
- 👤 Charles C Alvord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:08
CPC Classifications
B; B23; B23Q; B23Q15/00; B23Q15/007; B23Q15/08; B23Q15/10; B24; B24B; B24B47/00; B24B47/10; B24B47/18; Y; Y10; Y10S; Y10S451/00; Y10S451/915
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) | 1945-08-24 | 1946-02-23 | 1946-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-08-24 | 1950-02-23 | 1950-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-08-24 | 1954-02-23 | 1954-08-25 | $7700.00 | Window Closed / Lapsed |