Patent US3059394A successfully refreshed from Google Patents.
US3059394A
Expired / Lapsed
US
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Electrostatic precipitator
Assignee: Beazer East Inc
•
Filing: 1959-09-08
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Granted: 1962-10-23
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Expires: 1979-09-08
Abstract
No abstract record available.
Inventors
- 👤 John B Thomas
- 👤 John W Drenning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:34
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/66; B03C3/68; Y; Y10; Y10S; Y10S323/00; Y10S323/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1878024A
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US2198618A
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US2491428A
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US2672947A
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US2798571A
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US2897914A
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US2817056A
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US2917130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |