US3458974A
Expired / Lapsed
US
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Continuous thermal precipitator
Assignee: Georgia Tech Research Institute
•
Filing: 1965-10-13
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Granted: 1969-08-05
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Expires: 1985-10-13
Abstract
No abstract record available.
Inventors
- 👤 Clyde Orr Jr
- 👤 Warren P Hendrix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:49
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/22; G01N1/2202; G01N2001/222; G01N2001/2223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3136627A
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US3274756A
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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) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |