US3027652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and means for simultaneously cleaning and drying finely divided mineral matter such as coal and the like
Assignee: Individual
•
Filing: 1958-01-20
•
Granted: 1962-04-03
•
Expires: 1978-01-20
Abstract
No abstract record available.
Inventors
- 👤 George W Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:54
CPC Classifications
B; B03; B03B; B03B4/00; B03B4/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1595088A
Cited
US805030A
Cited
US905252A
Cited
US1079905A
Cited
US1802476A
Cited
US1868512A
Cited
US2014249A
Cited
US2512422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |