DH

David F. Hakala

RC Rca: 2 patents #592 of 1,739Top 35%
Illinois Tool Works: 1 patents #2,292 of 4,258Top 55%
Overall (All Time): #1,513,680 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9524886 Brush core and brush driving method Robert G. Kobetsky, Daniel P. McDonald, Alan J. Varacins, Weijin Li 2016-12-20
4469563 Process for treating high-density information disc recording substrates 1984-09-04
4255504 Method for producing CRT screen structure 1981-03-10