Patent US1039093A successfully refreshed from Google Patents.
US3016833A
Expired / Lapsed
US
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Apparatus for and method of producing heavy oil
Assignee: Individual
•
Filing: 1959-05-29
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Granted: 1962-01-16
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Expires: 1979-05-29
Abstract
No abstract record available.
Inventors
- 👤 James R Creed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:49
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; F; F04; F04B; F04B47/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US966772A
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US1597161A
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US1738136A
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US2530673A
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US2596146A
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US2404930A
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US2672815A
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US2704979A
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US2764940A
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US2933042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |