US2844252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic separator
Assignee: Reserve Mining Co
•
Filing: 1955-07-14
•
Granted: 1958-07-22
•
Expires: 1975-07-14
Abstract
No abstract record available.
Inventors
- 👤 Edward M Furness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:41
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/10; B03C1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US468540A
Cited
US1146141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |