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Patent US3079181A successfully refreshed from Google Patents.
US3079181A
Expired / Lapsed
US
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Box-and-pin-type threaded joint having different pitches and pitch diameters
Assignee: Shell USA Inc
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Filing: 1959-05-14
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Granted: 1963-02-26
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Expires: 1979-05-14
Abstract
No abstract record available.
Inventors
- 👤 Wissel Herman Tobias Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:26
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042; F; F16; F16L; F16L15/00; F16L15/001; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/938
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1909489A
Cited
US1817808A
Cited
US2360826A
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US2345725A
Cited
GB569581A
Cited
US2870668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |