Patent US2972944A successfully refreshed from Google Patents.
US2972944A
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US
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Dampening device and method for lithographic offset printing plate
Assignee: Harris Graphics Corp
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Filing: 1956-04-09
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Granted: 1961-02-28
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Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Harold P Dahlgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:05
CPC Classifications
B; B41; B41F; B41F7/00; B41F7/20; B41F7/24; B41F7/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE524256A
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DE387694C
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US855025A
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GB502316A
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US2678001A
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US2868118A
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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) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |