US3372529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate electrode assembly for electrostatic precipitator
Assignee: American Air Filter Co Inc
•
Filing: 1966-09-08
•
Granted: 1968-03-12
•
Expires: 1986-09-08
Abstract
No abstract record available.
Inventors
- 👤 John D Harms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:56
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/40; B03C3/45; B03C3/53; B03C3/86
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
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Cited
US2998098A
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US3055158A
Cited
US3017952A
Cited
US3018844A
Cited
US3114616A
Cited
US3257779A
Cited
US3238702A
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US3257778A
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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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |