US3370239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Numerical control system for command speeds of tri-dimensional displacements
Assignee: Hitachi Ltd
•
Filing: 1964-09-15
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Granted: 1968-02-20
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Expires: 1984-09-15
Abstract
No abstract record available.
Inventors
- 👤 Seki Susumu
- 👤 Oya Yuichiro
- 👤 Ando Hirokazu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:36
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/416; G05B2219/00; G05B2219/30; G05B2219/43; G05B2219/43188
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2749496A
Cited
US3303421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |