US3412797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning fractures and apparatus therefor
Assignee: Gulf Research and Development Co
•
Filing: 1966-10-03
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Granted: 1968-11-26
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Expires: 1986-10-03
Abstract
No abstract record available.
Inventors
- 👤 Jimmie L Huitt
- 👤 Bruce B Mcglothlin
- 👤 Robert P Trump
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:07
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/2605; E21B37/00; E21B37/08; E21B43/267
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2635697A
Cited
US3090436A
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US3087551A
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US3097691A
Cited
US3200882A
Cited
US3213940A
Cited
US3170517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |