US2935155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling electrical precipitators
Assignee: Joy Manufacturing Co
•
Filing: 1954-07-09
•
Granted: 1960-05-03
•
Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 Michael P Foley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:55
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/66; B03C3/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE670245C
Cited
GB521316A
Cited
US2623608A
Cited
GB705604A
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US2672947A
Cited
US2666496A
Cited
US2675092A
Cited
US2764254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |