Patent US2540643A successfully refreshed from Google Patents.
Patent US2784366A successfully refreshed from Google Patents.
← Back to Patent Explorer
US2784366A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and apparatus for dynamic braking

Assignee: Airco Inc
•
Filing: 1953-12-03
•
Granted: 1957-03-05
•
Expires: 1973-12-03
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Richard B Steele

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 19:32
CPC Classifications
H; H02; H02P; H02P3/00; H02P3/06; H02P3/18; H02P3/24

Claims Analysis

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

References Cited (Backward Citations)

GB190702677A Cited
US925355A Cited
US1089384A Cited
GB144263A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1960-03-04 1960-09-03 1961-03-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1964-03-04 1964-09-03 1965-03-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1968-03-04 1968-09-03 1969-03-05 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag