Patent US3588977A successfully refreshed from Google Patents.
US3588977A
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Assignee: Valenite LLC
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Filing: 1968-08-06
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Granted: 1971-06-29
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Expires: 1988-08-06
Abstract
Abstract THE MEANS AND METHOD OF USING A SQUARE CUTTING INSERT TO BORE, MILL AND TURN 90* SHOULDER WALLS, WHILE HAVING NECESSARY SIDE CLEARANCE, BY PROVIDING THE INSERT WITH ZERO LEAD, NEGATIVE RADIAL RAKE, AND POSITIVE AXIAL RAKE.
Inventors
- 👤 Robert A Bellingham
- 👤 Victor Milewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:34
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/2239; B23C5/2252; B23B; B23B29/00; B23B29/03; B23B51/00; B23B51/0006; B23B51/10; B23B51/109; B23C5/165; B23B2251/00; B23B2251/50; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/1912; Y10T407/192; Y10T407/1922; Y10T407/1924; Y10T407/195; Y10T407/1952; Y10T407/1962; Y10T407/23; Y10T408/00; Y10T408/86
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |