Patent US2465160A successfully refreshed from Google Patents.
US2465160A
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US
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Duplicating apparatus
Assignee: Ditto Inc
•
Filing: 1944-03-02
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Granted: 1949-03-22
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Expires: 1964-03-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Levenhagen
- 👤 William J Champion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:58
CPC Classifications
B; B41; B41L; B41L7/00; B41L7/02; B41L7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1969154A
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US1889376A
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US2067289A
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US2102641A
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US2118517A
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US2103254A
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US2144130A
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US2172113A
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US2126768A
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US2165235A
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US2335954A
Cited
US2238050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-21 | 1952-09-20 | 1953-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-21 | 1956-09-20 | 1957-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-21 | 1960-09-20 | 1961-03-22 | $7700.00 | Window Closed / Lapsed |