US2968144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo controlled drive mechanism
Assignee: National Research Development Corp UK
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Filing: 1959-03-17
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Granted: 1961-01-17
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Expires: 1979-03-17
Abstract
No abstract record available.
Inventors
- 👤 Royle Joseph Kenneth
- 👤 Williams Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:14
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/36; B23Q15/00; F; F15; F15B; F15B9/00; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; G05B19/23; G05B19/231; G05B19/232; G05B19/43; G05B19/44; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/304536; Y10T409/305936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |