Patent US2863191A successfully refreshed from Google Patents.
US2863191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sand conditioning equipment
Assignee: Harry W Dietert Co
•
Filing: 1956-10-01
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Granted: 1958-12-09
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Expires: 1976-10-01
Abstract
No abstract record available.
Inventors
- 👤 Harry W Dietert
- 👤 Randolph L Dietert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:26
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/22; G01N27/223; B; B22; B22C; B22C5/00; B22C5/08; Y; Y10; Y10S; Y10S241/00; Y10S241/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2273126A
Cited
US2277953A
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US2304448A
Cited
US2607828A
Cited
US2650343A
Cited
US2709843A
Cited
US2791120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |