Patent US1970593A successfully refreshed from Google Patents.
US3204489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chart driving mechanism for recorders
Assignee: Hitachi Ltd
•
Filing: 1963-01-28
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Granted: 1965-09-07
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Furukawa Kinichiro
- 👤 Nishimura Masaharu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:30
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |