US2813318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating granular material
Assignee: Simpson Herbert Corp
•
Filing: 1954-06-29
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Granted: 1957-11-19
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Expires: 1974-06-29
Abstract
No abstract record available.
Inventors
- 👤 Horth Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:57
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/10; Y; Y10; Y10S; Y10S241/00; Y10S241/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1700713A
Cited
DE533310C
Cited
US1971092A
Cited
US2072492A
Cited
US2055385A
Cited
US2478461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |