Patent US2917248A successfully refreshed from Google Patents.
US2917248A
Expired / Lapsed
US
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Pulverizing system
Assignee: Kohlenscheidungs GmbH
•
Filing: 1957-03-20
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Granted: 1959-12-15
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Expires: 1977-03-20
Abstract
No abstract record available.
Inventors
- 👤 Krug Julius
- 👤 Goltz Lothar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:29
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/02; B02C13/06; B02C13/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US125172A
Cited
US582873A
Cited
US1246514A
Cited
US1300192A
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US1405151A
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US1483241A
Cited
FR622018A
Cited
US1636033A
Cited
DE599128C
Cited
US2012694A
Cited
US2091772A
Cited
US2352327A
Cited
US2562560A
Cited
US2644740A
Cited
US2651470A
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US2707314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |