US3468254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatically chargeable printing form
Assignee: Individual
•
Filing: 1965-05-21
•
Granted: 1969-09-23
•
Expires: 1985-05-21
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Ritzerfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:18
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38207; G; G03; G03G; G03G13/00; G03G13/26; G03G15/00; G03G15/22; G03G15/24; G03G17/00; G03G5/00; G03G5/02
Claims Analysis
Total Claims: 0
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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) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |