US3380069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line printer employing selectable electrode matrices arrayed on a rotating drum
Assignee: Hitachi Ltd
•
Filing: 1963-06-18
•
Granted: 1968-04-23
•
Expires: 1983-06-18
Abstract
No abstract record available.
Inventors
- 👤 Hojo Toku
- 👤 Takeya Hirofumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:27
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/385; B41J2/41
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2726940A
Cited
US3205484A
Cited
US3058415A
Cited
US3141170A
Cited
US3182333A
Cited
US3184749A
Cited
US3234904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |