Patent US3459259A successfully refreshed from Google Patents.
US3459259A
Expired / Lapsed
US
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Mudline suspension system
Assignee: Mobil Oil AS
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Filing: 1966-09-09
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Granted: 1969-08-05
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Expires: 1986-09-09
Abstract
No abstract record available.
Inventors
- 👤 William R Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:03
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B7/128; E21B33/00; E21B33/02; E21B33/03; E21B33/035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2077044A
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US2159401A
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US2194265A
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US2607422A
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US3089543A
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US3256937A
Cited
US3353364A
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US3310107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |