Patent US2531885A successfully refreshed from Google Patents.
US2531885A
Expired / Lapsed
US
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Paper feeding device
Assignee: International Business Machines Corp
•
Filing: 1945-08-09
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Granted: 1950-11-28
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Expires: 1965-08-09
Abstract
No abstract record available.
Inventors
- 👤 Albert W Mills
- 👤 Frank J Furman
- 👤 Edward J Rabenda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:19
CPC Classifications
B; B41; B41J; B41J11/00; B41J11/36; B41J11/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US558221A
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US636721A
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US1508095A
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US1591081A
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US2003329A
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US2153182A
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US2310418A
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US2243474A
Cited
US2138646A
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US2369441A
Cited
US2328653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |