US3380672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beater mill having improved beater arm support
Assignee: Kohlenscheidungs GmbH
•
Filing: 1965-12-06
•
Granted: 1968-04-30
•
Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Weispfenning Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:22
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/10; B02C13/12; B02C13/02; B02C13/06; B02C13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1527818A
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US1646720A
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US1719831A
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US1748046A
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US1713507A
Cited
US1977501A
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US2424316A
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US2974888A
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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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |