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Patent US3483671A successfully refreshed from Google Patents.
US3483671A
Expired / Lapsed
US
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Electrostatic dust precipitator
Assignee: GEA Group AG
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Filing: 1967-12-01
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Granted: 1969-12-16
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Expires: 1987-12-01
Abstract
No abstract record available.
Inventors
- 👤 Jean Wiemer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:44
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/40; B03C3/41; B03C2201/00; B03C2201/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA687858A
Cited
US1252183A
Cited
US1333790A
Cited
DE338416C
Cited
GB413800A
Cited
US2199390A
Cited
US2409957A
Cited
US3221475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |