DL

Douglas J. Littlejohn

QT Quest Technologies: 3 patents #1 of 12Top 9%
BA Ballogy: 2 patents #42 of 101Top 45%
PC Power Concepts: 1 patents #3 of 3Top 100%
Overall (All Time): #590,744 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5648708 Force actuated machine controller 1997-07-15
5274311 Control system network structure John Golini 1993-12-28
5248007 Electronic control system for stair climbing vehicle Baxter R. Watkins, John H. Hessler, Havard L. Staggs, Chi-Foun Kuen 1993-09-28
5123495 Wheelchair stair climbing control system John H. Hessler, Baxter R. Watkins 1992-06-23
5033000 Variable keyed power distribution and control system for motorized wheelchair Havard L. Staggs, Baxter R. Watkins 1991-07-16
5002397 System of fluid inspection and/or identification Jerry G. Ingrum, Douglas N. Modlin 1991-03-26
4998824 System of fluid inspection and/or identification Douglas N. Modlin, Jerry G. Ingrum, Brian R. Devlin 1991-03-12
4940945 Interface circuit for use in a portable blood chemistry measuring apparatus Richard L. Fellows 1990-07-10
4929426 Portable blood chemistry measuring apparatus Balazs I. Bodai, Michael D. Grandon, Scott Gilbert, Kyle E. Lemons, Richard L. Fellows +2 more 1990-05-29