US2543910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for printing on duplex
Assignee: —
•
Filing: —
•
Granted: 1951-03-06
•
Expires: 1968-03-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:04
CPC Classifications
B; B41; B41F; B41F1/00; B41F1/26; B41F1/28; B41J; B41J3/00; B41J3/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US463701A
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US1194742A
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US680350A
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US809378A
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US911406A
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US1024157A
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US1592470A
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US1889657A
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US1881090A
Cited
US2045996A
Cited
US2039600A
Cited
US2163958A
Cited
US2165301A
Cited
US2281260A
Cited
US2331331A
Cited
US2386872A
Cited
US2363989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |