Patent US2590534A successfully refreshed from Google Patents.
US2590534A
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US
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Apparatus for producing electrified powders by friction
Assignee: Dite & Laboratoires Georges Truffaut Ets Ste
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Filing: 1949-07-22
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Granted: 1952-03-25
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Expires: 1969-07-22
Abstract
No abstract record available.
Inventors
- 👤 Hampe Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:03
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/025; B05B5/047; A; A01; A01M; A01M9/00; A01M9/0007; A01M9/0053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US532642A
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US628670A
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US1405613A
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US2114682A
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US2165946A
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US2302289A
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US2302185A
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US2396533A
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US2477927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |