Patent US4235553B1 successfully refreshed from Google Patents.
US4235553B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material mixer
Assignee: Sears Roebuck and Co
•
Filing: 1979-07-16
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Granted: 1991-04-02
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Expires: 1999-07-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:13
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/06; B01; B01F; B01F29/00; B01F29/10; B01F29/40; B01F29/403; B01F29/4035; B01F29/40351; B01F35/00; B01F35/40; B01F35/42; B01F35/421; B01F35/425
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-01 | 1994-10-01 | 1995-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-01 | 1998-10-01 | 1999-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-01 | 2002-10-01 | 2003-04-02 | $7700.00 | Window Closed / Lapsed |