US2540971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet stacking and conveying machine
Assignee: Samuel M Langston Co
•
Filing: 1946-05-03
•
Granted: 1951-02-06
•
Expires: 1966-05-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Wilmer W Wagner
- 👤 Henry B Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:03
CPC Classifications
B; B65; B65H; B65H33/00; B65H33/14; B65H2701/00; B65H2701/10; B65H2701/17; B65H2701/176; B65H2701/1762; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1305501A
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US2084741A
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US2076391A
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US2367416A
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US2375241A
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US2392032A
Cited
US2414337A
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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) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |