Patent US3017934A successfully refreshed from Google Patents.
US3017934A
Expired / Lapsed
US
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Casing support
Assignee: Superior Oil Co
•
Filing: 1955-09-30
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Granted: 1962-01-23
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Expires: 1975-09-30
Abstract
No abstract record available.
Inventors
- 👤 Aaron D Rhodes
- 👤 Stratton Hal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:18
CPC Classifications
E; E21; E21B; E21B15/00; E21B15/02; E21B17/00; E21B17/01; E21B17/012; E21B43/00; E21B43/01
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |