Patent US2731130A successfully refreshed from Google Patents.
US2731130A
Expired / Lapsed
US
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Feed mechanism for lumber conveyor
Assignee: Weyerhaeuser Timber Co
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Filing: 1950-06-13
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Granted: 1956-01-17
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Expires: 1970-06-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles Blickenderfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:26
CPC Classifications
B; B27; B27B; B27B5/00; B27B5/16; B27B5/22; B27B5/228; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/28; B65G47/29; B65G2201/00; B65G2201/02; B65G2201/0282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US845152A
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US1021876A
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US1588821A
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US1557765A
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US1454992A
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US1633014A
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US1894415A
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US2184905A
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US2403673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |