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US3445090A
Expired / Lapsed
US
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Screw mixer
Assignee: Individual
•
Filing: 1968-01-29
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Granted: 1969-05-20
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Expires: 1988-01-29
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Lodige
- 👤 Josef Lucke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:08
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/286; B01; B01F; B01F27/00; B01F27/80; B01F27/84; B01F31/00; B01F31/56; B29B; B29B7/00; B29B7/02; B29B7/06; B29B7/10; B29B7/12; B29B7/14; B29B7/22; B29B7/24; B29B7/242; B29B7/244; B01F27/05; B01F27/09; B01F27/091; B01F27/11; B01F27/15; B29B7/30; B29B7/58; B29B7/72; B29C48/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US454323A
Cited
US1268813A
Cited
US1394371A
Cited
US2825511A
Cited
US2864593A
Cited
US3295838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |