DB

Don C. Burkman

FH Fsi Holdings: 4 patents #1 of 21Top 5%
📍 Excelsior, MN: #55 of 237 inventorsTop 25%
🗺 Minnesota: #11,810 of 52,454 inventorsTop 25%
Overall (All Time): #859,273 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
8376299 Apparatus and method for displaying pictures and flat art objects 2013-02-19
D629215 Frame for displaying photos, pictures, and other flat art objects 2010-12-21
4816081 Apparatus and process for static drying of substrates Jitesh Mehta, Cooky Mezaki 1989-03-28
4801335 Rinsing in acid processing of substrates David D. Schumacher, Charlie A. Peterson 1989-01-31
4682615 Rinsing in acid processing of substrates David D. Schumacher, Charlie A. Peterson 1987-07-28
4609575 Method of apparatus for applying chemicals to substrates in an acid processing system 1986-09-02