Patent US2970532A successfully refreshed from Google Patents.
US2970532A
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Apparatus for automatic proportioned mixing and grinding
Assignee: BELLE CITY Manufacturing Co
•
Filing: 1954-02-08
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Granted: 1961-02-07
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Expires: 1974-02-08
Abstract
No abstract record available.
Inventors
- 👤 Robert F Skelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:51
CPC Classifications
A; A01; A01K; A01K5/00; A01K5/02; A01K5/0275; B; B01; B01F; B01F35/00; B01F35/80; B01F35/892; B01F23/00; B01F23/60; Y; Y10; Y10S; Y10S241/00; Y10S241/604; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US520138A
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US991178A
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US1583892A
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US1825475A
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US2279287A
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US2285765A
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US2376304A
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US2489498A
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US2658644A
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US2669924A
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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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |