US3416774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Worm mixing devices
Assignee: Werner and Pfleiderer GmbH
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Filing: 1967-02-02
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Granted: 1968-12-17
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Expires: 1987-02-02
Abstract
No abstract record available.
Inventors
- 👤 Fritsch Rudolf Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:36
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/114; B01F27/1143; B29; B29C; B29C48/00; B29C48/25; B29C48/256; B29C48/2564; B01F27/051; B01F27/053; B01F27/0531; B01F27/60; B01F27/73; B01F27/731; B01F35/00; B01F35/50; B01F35/511; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/42; B29B7/428; B29B7/429; B29B7/46; B29B7/48; B29B7/482; B29B7/483; B29B7/80; B29B7/82; B29B7/826; B29C48/36; B29C48/50; B29C48/68; B29C48/6801; B29C48/682; B29C48/03; B29C48/395; B29C48/40
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) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |