US2883169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerating apparatus for flotation pulps
Assignee: Mining Process and Patent Co
•
Filing: 1955-04-29
•
Granted: 1959-04-21
•
Expires: 1975-04-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Daman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:57
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/40; B01F23/45; B01F23/454; B01F25/00; B01F25/20; B01F25/21; B01F25/212; B01F25/2123; B01F25/30; B01F25/31; B01F25/312; B03; B03D; B03D1/00; B03D1/02; B03D1/028; B03D1/14; B03D1/1412; B03D1/1443; B03D1/1456; B03D1/1493; B03D1/24; B03D1/247; B01F23/20; B01F23/23; B01F33/00; B01F33/80; B01F33/81
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |