Patent US3559260A successfully refreshed from Google Patents.
US3559260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable cutting inserts
Assignee: Wickman Wimet Ltd
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Filing: 1969-03-10
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Granted: 1971-02-02
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Expires: 1989-03-10
Abstract
Abstract A MACHINE TOOL CUTTING INSERT COMPRISING A POLYGONAL BODY HAVING ON AT LEAST ONE FACE A CONTINUOUS LAND EXTENDING AROUND ITS MARGINAL EDGES, AND A CO-PLANAR CENTRAL PLATEAU HAVING SIDES OPPOSITE SIDE%S OF THE BODY CHARACTERISED IN THAT THE SIDES OF THE PLATEAU ARE CONVEX SO THAT THE INTERVENING GROOVE FORMED BETWEEN THE PLATEAU AND THE LAND FROM POINTS MIDWAY BETWEEN THE CORNERS OF THE BODY TOWARDS THE CORNERS.
Inventors
- 👤 Lionel Fine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:49
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B23B27/143; Y; Y10; Y10T; Y10T407/00; Y10T407/23; Y10T407/24; Y10T407/245
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |