US2944376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinder attachment for woodworking machines
Assignee: Rockwell Manufacturing Co
•
Filing: 1954-06-22
•
Granted: 1960-07-12
•
Expires: 1974-06-22
Abstract
No abstract record available.
Inventors
- 👤 Richard A Buttke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:37
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/38
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |