US3025912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tool having pivotally connected tubular sections
Assignee: Otis Engineering Corp
•
Filing: 1957-11-04
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Granted: 1962-03-20
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Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 Harry B Schramm
- 👤 Raulins George Max
- 👤 John V Fredd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:27
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/068; E21B33/076; Y; Y10; Y10S; Y10S285/00; Y10S285/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1130181A
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US1828124A
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US2065715A
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US2315931A
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US2333802A
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US2609226A
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US2676787A
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US2737248A
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US2793833A
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US2846014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |