US3059708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasion resistant stepped blade rotary drill bit
Assignee: Jersey Production Research Co
•
Filing: 1959-08-07
•
Granted: 1962-10-23
•
Expires: 1979-08-07
Abstract
No abstract record available.
Inventors
- 👤 George E Cannon
- 👤 Charles R Overly
- 👤 Iii James E Root
- 👤 Ii Thomas Pennington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:48
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/003; E21B10/46; E21B10/54; E21B10/60; E21B10/602
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2695158A
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US2740611A
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US2740612A
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US2830794A
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US2855181A
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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) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |