US3419094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill string stabilizer
Assignee: Reed Roller Bit Co
•
Filing: 1966-06-17
•
Granted: 1968-12-31
•
Expires: 1986-06-17
Abstract
No abstract record available.
Inventors
- 👤 Roy A Bobo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:21
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2079449A
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US2352412A
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US2388416A
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US2794617A
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US2829864A
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US2973996A
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US2877062A
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US3338069A
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US3306378A
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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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |