US2736085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of grain flow control
Assignee: —
•
Filing: —
•
Granted: 1956-02-28
•
Expires: 1973-02-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:10
CPC Classifications
B; B21; B21K; B21K21/00; B21K21/04; B21C; B21C23/00; B21C23/02; B21C23/04; B21C23/14; F; F42; F42B; F42B5/00; F42B5/26; F42B5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US191430A
Cited
GB190823304A
Cited
US1296842A
Cited
US2140775A
Cited
DE700207C
Cited
DE719783C
Cited
US2349970A
Cited
US2338652A
Cited
US2371716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |