Patent US3490017A successfully refreshed from Google Patents.
US3490017A
Expired / Lapsed
US
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Numerical control systems employing conversion of changing command numbers into phase analog signals
Assignee: Giddings and Lewis LLC
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Filing: 1966-12-19
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Granted: 1970-01-13
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Expires: 1986-12-19
Abstract
No abstract record available.
Inventors
- 👤 Norbert C Kolell
- 👤 Thomas B Bullock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:51
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/66; H03M1/665; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/33; G05B19/37; G05B19/371
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) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |