US3033133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder washing apparatus
Assignee: Union Carbide Corp
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Filing: 1955-09-26
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Granted: 1962-05-08
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Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 Dewitt T Kelley
- 👤 Roger S Babcock
- 👤 Edward M Holub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:18
CPC Classifications
B; B24; B24C; B24C7/00; B24C7/0046; B05; B05B; B05B7/00; B05B7/16; B05B7/20; B05B7/201; B05B7/205; B24C1/00; B24C1/08; B24C1/086; F; F23; F23D; F23D14/00; F23D14/34
Claims Analysis
Total Claims: 0
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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) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |