US2655263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ore pulp concentrator
Assignee: Ferros Metals Res Co Ltd
•
Filing: 1950-10-12
•
Granted: 1953-10-13
•
Expires: 1970-10-12
Abstract
No abstract record available.
Inventors
- 👤 Gilbert G Chisholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:06
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/12; B04C3/00; B04C5/08; B04C5/081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US762866A
Cited
GB340027A
Cited
US1919653A
Cited
US2236548A
Cited
US2273271A
Cited
US2330423A
Cited
GB607777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |