DR

Darby R. Robertson

Caterpillar: 6 patents #1,094 of 8,398Top 15%
📍 Morton, IL: #43 of 245 inventorsTop 20%
🗺 Illinois: #15,122 of 84,256 inventorsTop 20%
Overall (All Time): #878,782 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
6739680 Cartridge assembly for a track chain Michael D. Hasselbusch, Roy L. Maguire 2004-05-25
6435628 Guiding arrangement for a track type work machine Michael D. Hasselbusch, Roy L. Maguire 2002-08-20
6382742 Cartridge assembly for a track chain of a track type work machine Michael D. Hasselbusch, Roy L. Maguire, Thomas E. Oertley 2002-05-07
6371577 Track chain assembly for a work machine Michael D. Hasselbusch, Roy L. Maguire 2002-04-16
6354679 Off-set symmetrical link and an associated subassembly for a track chain assembly Roy L. Maguire 2002-03-12
6322173 Link for a track chain assembly of a track type work machine Roy L. Maguire 2001-11-27