Patent US3477203A successfully refreshed from Google Patents.
US3477203A
Expired / Lapsed
US
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Method for cooling the combustion gases of refuse incinerators
Assignee: GEA Group AG
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Filing: 1968-05-01
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Granted: 1969-11-11
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Expires: 1988-05-01
Abstract
No abstract record available.
Inventors
- 👤 Karlheinz E Luge
- 👤 Wolfgang Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:39
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |