US3012839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrographic printer
Assignee: Unisys Corp
•
Filing: 1954-07-15
•
Granted: 1961-12-12
•
Expires: 1974-07-15
Abstract
No abstract record available.
Inventors
- 👤 Epstein Herman
- 👤 Frank T Innes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:41
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/22; G03G15/32; G03G15/321; G03G15/325; G03G19/00; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2035475A
Cited
US2200741A
Cited
US2221776A
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US2502419A
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US2540081A
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USRE23713E
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US2771336A
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US2691154A
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US2716048A
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US2777745A
Cited
US2919170A
Cited
US2844812A
Cited
US2691155A
Cited
FR1077037A
Cited
US2769680A
Cited
US2920312A
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US2719965A
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US2878313A
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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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |