Patent US3001585A successfully refreshed from Google Patents.
US3001585A
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US
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Deep well cementing apparatus
Assignee: Texaco Inc
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Filing: 1957-12-17
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Granted: 1961-09-26
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Expires: 1977-12-17
Abstract
No abstract record available.
Inventors
- 👤 Levi F Shiplet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:34
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/14; E21B33/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1910442A
Cited
US1944442A
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US2187480A
Cited
US2607425A
Cited
US2795281A
Cited
US2765854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |