WD

Walter H. Douglas

EC Excello Co.: 1 patents #92 of 216Top 45%
Overall (All Time): #4,122,497 of 4,157,543Top 100%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4229991 Gear reducer with tandem drives to the output Richard F. Peterson, Willard J. Nielsen, Charles D. Treat, Jerry B. Hagaman, Wendell G. Loveless +1 more 1980-10-28