Patent US4153843A successfully refreshed from Google Patents.
Patent US2983653A successfully refreshed from Google Patents.
US2983653A
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Apparatus for degasifying finely divided fuels
Assignee: GEA Group AG
•
Filing: 1954-12-01
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Granted: 1961-05-09
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Expires: 1974-12-01
Abstract
No abstract record available.
Inventors
- 👤 Danulat Hedwig Gertrud
- 👤 Danulat Hans Friedrich
- 👤 Schmalfeld Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:27
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/16; C10B7/00; C10B7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1432101A
Cited
US36230A
Cited
US1712083A
Cited
US1530020A
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US1573824A
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US1972929A
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US2072721A
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US2458068A
Cited
US2567219A
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US2512076A
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US2463693A
Cited
US2517339A
Cited
US2570864A
Cited
GB672157A
Cited
US2654698A
Cited
US2693873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |