US3471013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor-fed aerodynamic separator
Assignee: FMC Corp
•
Filing: 1968-02-23
•
Granted: 1969-10-07
•
Expires: 1988-02-23
Abstract
No abstract record available.
Inventors
- 👤 William B Haver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:08
CPC Classifications
B; B07; B07B; B07B4/00; B07B13/00; B07B13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1005380A
Cited
US1715197A
Cited
US2114727A
Cited
US2281120A
Cited
US2653712A
Cited
US2988213A
Cited
US3227276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |