Patent US2982354A successfully refreshed from Google Patents.
US2982354A
Expired / Lapsed
US
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Paraffin removing device
Assignee: Individual
•
Filing: 1957-04-26
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Granted: 1961-05-02
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Expires: 1977-04-26
Abstract
No abstract record available.
Inventors
- 👤 William G Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:18
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1169261A
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US1764213A
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US2244256A
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US2757738A
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US2597261A
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US2667626A
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US2728396A
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US2741915A
Cited
US2812818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |