US3562958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for making cutting blades
Assignee: AMF Inc
•
Filing: 1969-02-04
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Granted: 1971-02-16
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Expires: 1989-02-04
Abstract
Abstract A MACHINE HAVING A FIRST GRINDING WHEEL FOR PROVIDING A CUTTING EDGE ON STRIP STEEL AND A SECOND GRINDING WHEEL FOR PARTING OFF A PREDETERMINED LENGTH OF STRIP HAVING SAID CUTTING EDGE.
Inventors
- 👤 Francis William Martin
- 👤 Frederick Charles Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:25
CPC Classifications
B; B24; B24B; B24B9/00; B24B9/002; B24B3/00; B24B3/56
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |