US3000349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplicator moistening device
Assignee: Individual
•
Filing: 1959-08-10
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Granted: 1961-09-19
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Expires: 1979-08-10
Abstract
No abstract record available.
Inventors
- 👤 Ritzerfeld Wilhelm
- 👤 Ritzerfeld Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:36
CPC Classifications
B; B41; B41L; B41L7/00; B41L7/02; B41L7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A DUPLICATOR, IN COMBINATION, A MOISTENING DEVICE COMPRISING LIQUID-TRANSFERRING MEANS FOR APPLYING A LIQUID TO A COPY SHEET SO AS TO MOISTEN THE SAME, SAID LIQUID-TRANSFERRING MEANS INCLUDING A FELT BODY HAVING AT LEAST A SURFACE PORTION CONSISTING OF A FIBROUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYTETRAFLUOROETHYLENE FIBERS AND POLYESTER FIBERS, AND MEANS FOR SUPPLYING LIQUID TO SAID LIQUID-TRANSFERRING MEANS.
Claim 2
Dependent Claim
63 words
IN A DUPLICATOR, IN COMBINATION, A MOISTENING DEVICE COMPRISING LIQUID-TRANSFERRING MEANS FOR APPLYING A LIQUID TO A COPY SHEET SO AS TO MOISTEN THE SAME, SAID LIQUID-TRANSFERRING MEANS INCLUDING A FELT BODY HAVING AT LEAST A SURFACE PORTION CONSISTING OF A FIBROUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYTETRAFLUOROETHYLENE FIBERS AND POLYESTER FIBERS, AND MEANS FOR SUPPLYING LIQUID TO SAID LIQUID-TRANSFERRING MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |