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US2991020A Expired / Lapsed US ⏱️ 0.0 years remaining

Double-disk refiner

Assignee: E D JONES CORP
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Filing: 1960-04-29
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Granted: 1961-07-04
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Expires: 1980-04-29
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Abstract

No abstract record available.

Inventors

  • 👤 Dwight E Jones

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 13:12
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/0056; B02C7/00; B02C7/02; B02C7/06; D; D21; D21D; D21D1/00; D21D1/20; D21D1/30

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US221707A Cited
US938466A Cited
US2356753A Cited
US2244996A Cited
US2903197A Cited
US2727440A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1964-07-03 1965-01-02 1965-07-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1968-07-03 1969-01-02 1969-07-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1972-07-03 1973-01-02 1973-07-04 $7700.00 Window Closed / Lapsed

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