Patent US3067801A successfully refreshed from Google Patents.
US3067801A
Expired / Lapsed
US
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Method and apparatus for installing a well liner
Assignee: FMC Corp
•
Filing: 1958-11-13
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Granted: 1962-12-11
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Expires: 1978-11-13
Abstract
No abstract record available.
Inventors
- 👤 Charles H Sortor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:21
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/10; E21B43/00; E21B43/02; E21B43/10; E21B43/103; E21B43/105; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/53; Y10T29/53987
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1117737A
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US1769350A
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US1880218A
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US1966248A
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US2447624A
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US2762436A
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US2877822A
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US2851112A
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US2812025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |