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US3062306A
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Drill bit
Assignee: Sandvik AB
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Filing: 1960-03-17
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Granted: 1962-11-06
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Expires: 1980-03-17
Abstract
No abstract record available.
Inventors
- 👤 Hjalsten John Anders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:04
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/58; E21B10/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB293645A
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US2196598A
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US2522045A
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US2634954A
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US2631824A
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US2673716A
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US2802642A
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US2888247A
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US2905443A
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US3006424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |