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US2422564A
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Electrical dust-precipitator
Assignee: Westinghouse Electric Corp
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Filing: 1945-07-09
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Granted: 1947-06-17
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Expires: 1965-07-09
Abstract
No abstract record available.
Inventors
- 👤 Edward H R Pegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:32
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/40; B03C3/45; B03C3/49; B03C3/02; B03C3/04; B03C3/12; B03C3/86
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1357466A
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US1478798A
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US1634372A
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US2008246A
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US2024226A
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US1982470A
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US2221601A
Cited
GB553753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |