Patent US4438770A successfully refreshed from Google Patents.
Patent US5528634A successfully refreshed from Google Patents.
Patent US2212426A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3525918A Expired / Lapsed US ⏱️ 0.0 years remaining

Motor drive circuit with dischargeable capacitive network

Assignee: Ametek Inc
•
Filing: 1968-11-01
•
Granted: 1970-08-25
•
Expires: 1988-11-01
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 James A Parnell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 07:03
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/18; G05D3/1427

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

US3430117A Cited
US3378739A Cited
US3403310A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1973-08-24 1974-02-23 1974-08-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1977-08-24 1978-02-23 1978-08-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1981-08-24 1982-02-23 1982-08-25 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag