US3515199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for recovering solids dissolved or suspended in a liquid solvent
Assignee: Lincoln Valley Minerals Inc
•
Filing: 1967-11-20
•
Granted: 1970-06-02
•
Expires: 1987-11-20
Abstract
No abstract record available.
Inventors
- 👤 Otto Murray Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:01
CPC Classifications
B; B01; B01D; B01D1/00; Y; Y10; Y10S; Y10S159/00; Y10S159/06; Y10S159/12; Y10S159/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189424457A
Cited
US1850154A
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US2448191A
Cited
US2561392A
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US2576496A
Cited
GB876676A
Cited
US3205588A
Cited
US3432258A
Cited
US3355366A
Cited
US3323575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |