US3088183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating granular material
Assignee: Simpson Herbert Corp
•
Filing: 1960-12-19
•
Granted: 1963-05-07
•
Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 Robert L Mcilvaine
- 👤 Ralph J Donat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:40
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1959465A
Cited
GB433034A
Cited
US2223018A
Cited
US2813318A
Cited
US2861304A
Cited
US2939189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |