Patent US3062565A successfully refreshed from Google Patents.
US3062565A
Expired / Lapsed
US
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Well head construction to accommodate plural tube strings
Assignee: Armco Inc
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Filing: 1959-02-05
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Granted: 1962-11-06
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Expires: 1979-02-05
Abstract
No abstract record available.
Inventors
- 👤 Jr William W Word
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:38
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/047; F; F16; F16L; F16L39/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1214985A
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GB174803A
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US1959607A
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US2443944A
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US2485497A
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US2557930A
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US2696395A
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US2775471A
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US3001803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |