Patent US3506201A successfully refreshed from Google Patents.
US3506201A
Expired / Lapsed
US
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Trough mixer having a dosing arrangement for mixing fibrous materials
Assignee: Draiswerke GmbH
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Filing: 1966-12-16
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Granted: 1970-04-14
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Expires: 1986-12-16
Abstract
No abstract record available.
Inventors
- 👤 Kaspar Engels
- 👤 Wilhelm Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:57
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/60; B01F27/625; B01F27/70; B01F27/80; B01F27/87; B01F33/00; B01F33/80; B01F33/836; B01F33/8361; B01F33/83612; B27; B27N; B27N1/00; B27N1/02; B27N1/0227; B27N1/0236; B27N1/0245; B29; B29B; B29B7/00; B29B7/74; B29B7/7461; B29K; B29K2503/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US744382A
Cited
US2019454A
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US2291038A
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US2672075A
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DE861048C
Cited
US2943800A
Cited
US3249310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |