DR

Darby R. Robertson

Caterpillar: 4 patents #18 of 431Top 5%
📍 Morton, IL: #2 of 19 inventorsTop 15%
🗺 Illinois: #186 of 5,836 inventorsTop 4%
Overall (2002): #16,705 of 266,432Top 7%
4
Patents 2002

Issued Patents 2002

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
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