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US2948353A
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Gas-cleaning precipitator
Assignee: Individual
•
Filing: 1958-01-08
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Granted: 1960-08-09
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Expires: 1978-01-08
Abstract
No abstract record available.
Inventors
- 👤 Gaylord W Penney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:07
CPC Classifications
F; F24; F24F; F24F8/00; F24F8/10; F24F8/192; B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/12; B03C3/34; B03C3/40; B03C3/45; Y; Y02; Y02A; Y02A50/00; Y02A50/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1041421A
Cited
US1968330A
Cited
US2359149A
Cited
US2381455A
Cited
DE752474C
Cited
CH301258A
Cited
US2822057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |