US2437681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged-belt type magnetic separator
Assignee: Individual
•
Filing: 1943-05-27
•
Granted: 1948-03-16
•
Expires: 1963-05-27
Abstract
No abstract record available.
Inventors
- 👤 Robert E Crockett
- 👤 Page S Haselton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:15
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/16; B03C1/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US422732A
Cited
US438897A
Cited
US463305A
Cited
US709982A
Cited
US800370A
Cited
US945408A
Cited
US971163A
Cited
US1146140A
Cited
US1284872A
Cited
US2003430A
Cited
DE624224C
Cited
US2090112A
Cited
US2160628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |