DN

Douglas M. Nickles

IN Invacare: 2 patents #81 of 196Top 45%
Overall (All Time): #2,314,172 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4989890 Length and width adjustable wheelchair Walter G. Lockard, Herbert J. Hoekstra, Allen J. Boris 1991-02-05
4813693 Adjustable child's wheelchair Walter G. Lockard, Herbert J. Hoekstra, Allen J. Boris 1989-03-21