Patent US2699869A successfully refreshed from Google Patents.
US2699869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic separator
Assignee: General Mills Inc
•
Filing: 1952-04-18
•
Granted: 1955-01-18
•
Expires: 1972-04-18
Abstract
No abstract record available.
Inventors
- 👤 Eli C Gear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:03
CPC Classifications
B; B03; B03C; B03C7/00; B03C7/02; B03C7/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US880891A
Cited
US1375741A
Cited
US2306105A
Cited
US2414993A
Cited
US2392044A
Cited
US2615570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |