US3497784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brushless direct current motor circuitry and like circuitry with protection for non-commutating conditions
Assignee: Ametek Inc
•
Filing: 1967-07-10
•
Granted: 1970-02-24
•
Expires: 1987-07-10
Abstract
No abstract record available.
Inventors
- 👤 J Roger Toth
- 👤 Michael L Gilliland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:12
CPC Classifications
H; H02; H02P; H02P6/00; H02P6/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3273041A
Cited
US3360710A
Cited
US3365636A
Cited
US3364408A
Cited
US3394299A
Cited
US3401327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |