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Patent US2536471A successfully refreshed from Google Patents.
US2536471A
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Vertically reciprocating sifting chute
Assignee: American Machinery Corp
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Filing: 1946-12-31
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Granted: 1951-01-02
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Expires: 1966-12-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Schunck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:29
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/12; B07B1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US15785A
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US206544A
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US595523A
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US786291A
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US947742A
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US1708137A
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US1655871A
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US1811991A
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US1844091A
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US2316159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |