US2934241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed air-powered device for fluidizing, metering and distributing dust materials
Assignee: University of California Berkeley
•
Filing: 1956-11-23
•
Granted: 1960-04-26
•
Expires: 1976-11-23
Abstract
No abstract record available.
Inventors
- 👤 Norman B Akesson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:12
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/1413; B05B7/1472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2713510A
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US1241437A
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US1911367A
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US2123537A
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US2202079A
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US2450205A
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US2668636A
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US2781154A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |