DC

David A. Chizmar

WE Westinghouse Electric: 5 patents #593 of 5,139Top 15%
TK Thermo King: 1 patents #268 of 483Top 60%
📍 Export, PA: #45 of 171 inventorsTop 30%
🗺 Pennsylvania: #13,581 of 74,527 inventorsTop 20%
Overall (All Time): #888,927 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
5666051 System and method for mapping residual surface stresses in a value ring Warren R. Junker, Lee W. Burtner, Michael G. Peck, Richard J. Makar 1997-09-09
5100610 Tube plug inspection system William E. Pirl, Edward A. Ray, Annette M. Costlow, Charles H. Roth, Jr., Francis X. Gradich 1992-03-31
5065635 Apparatus and method for inspecting an item having grooves machined therein Lee W. Burtner 1991-11-19
4992735 System and method for inspecting metallic plugs in heat exchanger tubes using a radially extendible probe William K. Cullen, Charles H. Roth, Jr., Lee W. Burtner, Francis X. Gradich, Lawrence Galata 1991-02-12
4586249 Mandrel having an eddy current probe Annette M. Costlow, Frank W. Cooper, Jr. 1986-05-06
4578643 Simulation apparatus for eddy current inspection techniques Warren R. Junker, Bruce J. Taszarek 1986-03-25