US3066920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blending apparatus for particulate materials
Assignee: Union Carbide Corp
•
Filing: 1959-07-13
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Granted: 1962-12-04
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Expires: 1979-07-13
Abstract
No abstract record available.
Inventors
- 👤 Rae A Prosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:44
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/80; B01F25/83
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US741831A
Cited
US1109725A
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US1047680A
Cited
US1224656A
Cited
US1383921A
Cited
US2361151A
Cited
US2697881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |