Patent US3460409A successfully refreshed from Google Patents.
US3460409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chip breaker for spade drill
Assignee: Allied Machine and Engineering Corp
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Filing: 1967-05-10
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Granted: 1969-08-12
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Expires: 1987-05-10
Abstract
No abstract record available.
Inventors
- 👤 William H Stokey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:37
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/0002; B23B51/0003; B23B51/00035; B23B2251/00; B23B2251/48; B23B2251/50; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1946; Y10T407/1948; Y10T407/24; Y10T408/00; Y10T408/89
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |