US3400513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic precipitator
Assignee: Babcock and Wilcox Co
•
Filing: 1966-09-08
•
Granted: 1968-09-10
•
Expires: 1986-09-08
Abstract
No abstract record available.
Inventors
- 👤 Richard H Boll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:33
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/12; Y; Y10; Y10S; Y10S55/00; Y10S55/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1337489A
Cited
US2142128A
Cited
US2615530A
Cited
US2662608A
Cited
US2715944A
Cited
US2813595A
Cited
US2789657A
Cited
GB792068A
Cited
US3053029A
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US2798572A
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US2822058A
Cited
US2817413A
Cited
US2814360A
Cited
GB820415A
Cited
US2983332A
Cited
US3248857A
Cited
US3247091A
Cited
US3218781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |