US3483669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust dislodging system for electrostatic precipitators
Assignee: Beazer East Inc
•
Filing: 1965-09-13
•
Granted: 1969-12-16
•
Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Melvin L Glaeser
- 👤 Earl L Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:11
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/74; B03C3/76; B03C3/86
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1903640A
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US2812035A
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US2893511A
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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 |