Patent US3350849A successfully refreshed from Google Patents.
US3350849A
Expired / Lapsed
US
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System for preventing arc re-ignition in electrostatic dust separators
Assignee: GEA Group AG
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Filing: 1967-03-02
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Granted: 1967-11-07
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Expires: 1987-03-02
Abstract
No abstract record available.
Inventors
- 👤 Eishold Horst-Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:27
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/66; B03C3/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE478386C
Cited
DE426149C
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DE448034C
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US2000020A
Cited
US1978426A
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GB404635A
Cited
GB386560A
Cited
US1959374A
Cited
US2440455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |