Patent US2824500A successfully refreshed from Google Patents.
US2824500A
Expired / Lapsed
US
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Refining machine
Assignee: E D JONES AND SONS Co
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Filing: 1955-07-19
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Granted: 1958-02-25
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Expires: 1975-07-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward H Cumpston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:23
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US489079A
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AT2001B
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US1187932A
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US1225874A
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US1922313A
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US2182391A
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US2527772A
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US2693738A
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US2722163A
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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) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |