US2552565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air swept rotary beater and separator with oversize-material return tube means to the air inlet
Assignee: FMC Corp
•
Filing: 1947-06-26
•
Granted: 1951-05-15
•
Expires: 1967-06-26
Abstract
No abstract record available.
Inventors
- 👤 Veaux John F Les
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:27
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US677702A
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US960893A
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US1427322A
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GB274278A
Cited
GB351291A
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US2200822A
Cited
US2294921A
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US2362142A
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US2329208A
Cited
US2354312A
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US2399051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |