US2460280A
Expired / Lapsed
US
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Assignee: Mining Process and Patent Co
•
Filing: 1943-10-22
•
Granted: 1949-02-01
•
Expires: 1963-10-22
Abstract
No abstract record available.
Inventors
- 👤 John H V Finney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:21
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/15; B01D33/21; B01D33/23; B01D33/44; B01D33/46; B01D33/466; B01D33/80; B01D33/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2351652A
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GB177819A
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US1887129A
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US1042295A
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US1208014A
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US1036174A
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US1030918A
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US1538980A
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US1812725A
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FR43493E
Cited
GB457832A
Cited
US2338549A
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US2395225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-01 | 1952-08-02 | 1953-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-01 | 1956-08-02 | 1957-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-01 | 1960-08-02 | 1961-02-01 | $7700.00 | Window Closed / Lapsed |