US3291304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reclaiming metallic particles from foundry sand
Assignee: Individual
•
Filing: 1965-04-12
•
Granted: 1966-12-13
•
Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Fuchs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:52
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/18; B22C5/185; B03; B03B; B03B5/00; B03B5/48; B03B5/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |