Patent US2741401A successfully refreshed from Google Patents.
US2741401A
Expired / Lapsed
US
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Feeder construction
Assignee: Laclede-Christy Co
•
Filing: 1952-01-23
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Granted: 1956-04-10
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Expires: 1972-01-23
Abstract
No abstract record available.
Inventors
- 👤 Charles V Kehres
- 👤 Luton L Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:33
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/04; B28C7/0454; B28C7/0472; B01; B01F; B01F35/00; B01F35/71; B01F35/717; B01F35/7173; B01F35/71731
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US845168A
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US900227A
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US990395A
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US1070798A
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US1170804A
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US1529219A
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US1409003A
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US2373239A
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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) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |