US3399334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo controlled motor drive with a mechanical filter between the motor and the driven member
Assignee: Ampex Corp
•
Filing: 1967-03-27
•
Granted: 1968-08-27
•
Expires: 1987-03-27
Abstract
No abstract record available.
Inventors
- 👤 Donald B Macleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:08
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; H; H02; H02P; H02P5/00; H02P5/74; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |