John L. Schrag

NR National Metal Refining: 1 patents #7 of 11Top 65%

📍 Madison, WI: #2,790 of 4,527 inventorsTop 65%

🗺 Wisconsin: #23,834 of 40,088 inventorsTop 60%

Overall (All Time): #3,954,716 of 4,157,543Top 100%

Patents All Time

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4754640	Apparatus and method for determining the viscoelasticity of liquids	J. Vincent Fitzgerald, Frank J. Matusik, Donald W. Nelson	1988-07-05