DH

Douglas R. Harper

CF Campbell Hausfeld / Scott Fetzer: 8 patents #6 of 101Top 6%
📍 Cadiz, OH: #14 of 98 inventorsTop 15%
🗺 Ohio: #10,201 of 73,341 inventorsTop 15%
Overall (All Time): #655,436 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
D636409 Compressor Darrin W. Wilmes, Berlie E. Parks, David O. Shumate 2011-04-19
D536707 Air compressor Gary S. Bass 2007-02-13
D536007 Air compressor Gary S. Bass 2007-01-30
D507279 Compressor shroud Tony Michael Guard 2005-07-12
D497917 Compressor shroud Tony Michael Guard, Matthew Davis Bantly 2004-11-02
D495717 Control panel for a compressor James Louis Tobergta, Tony Michael Guard, Joseph Robert Stephens 2004-09-07
D489736 Control panel for a compressor James Louis Tobergta, Tony Michael Guard, Joseph Robert Stephens 2004-05-11
D475721 Compressor shroud James Louie Tobergtan, Tony Michael Guard, Min-Hsieng Wang, Joseph Robert Stephens 2003-06-10