Patent US2903378A successfully refreshed from Google Patents.
Patent US3390814A successfully refreshed from Google Patents.
US3390814A
Expired / Lapsed
US
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Mixing device
Assignee: CHEM DEV CORP
•
Filing: 1965-09-24
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Granted: 1968-07-02
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Expires: 1985-09-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert M Creighton
- 👤 William D Devaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:54
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00553; B05C17/00566; B01; B01F; B01F31/00; B01F31/44; B01F31/441; B05C17/01; B01F2101/00; B01F2101/2305; B01F33/00; B01F33/50; B01F33/501; B01F33/5011; B01F35/00; B01F35/30; B01F35/32; B01F35/32005; B01F35/3202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |