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US2641387A
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Mixing machine discharge door
Assignee: Simpson Herbert Corp
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Filing: 1951-10-06
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Granted: 1953-06-09
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Expires: 1971-10-06
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:55
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/04; B22C5/0409; B22C5/0422; B22C5/0427; B01; B01F; B01F35/00; B01F35/45; B01F35/451
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2246991A
Cited
US2257672A
Cited
US2413603A
Cited
US2550856A
Cited
US2447575A
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CH272649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |