US3209843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic jarring tool with relief valve
Assignee: Houston Engineers Inc
•
Filing: 1962-09-11
•
Granted: 1965-10-05
•
Expires: 1982-09-11
Abstract
No abstract record available.
Inventors
- 👤 Derrel D Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:45
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/107; E21B31/113; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1697937A
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US1804700A
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US2140733A
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US2166742A
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US2835128A
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US2802703A
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US3055388A
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US3062305A
Cited
US3053270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |