Darby R. Robertson

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Morton, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Cartridge assembly for a track chain
- Patent number 6,739,680
- Issue date May 25, 2004
- Caterpillar Inc.
- Michael D. Hasselbusch
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Guiding arrangement for a track type work machine
- Patent number 6,435,628
- Issue date Aug 20, 2002
- Caterpillar Inc.
- Michael D. Hasselbusch
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Cartridge assembly for a track chain of a track type work machine
- Patent number 6,382,742
- Issue date May 7, 2002
- Caterpillar Inc.
- Michael D. Hasselbusch
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Track chain assembly for a work machine
- Patent number 6,371,577
- Issue date Apr 16, 2002
- Caterpillar Inc.
- Michael D. Hasselbusch
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Off-set symmetrical link and an associated subassembly for a track...
- Patent number 6,354,679
- Issue date Mar 12, 2002
- Caterpillar Inc.
- Roy L. Maguire
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Link for a track chain assembly of a track type work machine
- Patent number 6,322,173
- Issue date Nov 27, 2001
- Caterpillar Inc.
- Roy L. Maguire
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

Information Patent Application
Cartridge assembly for a track chain
- Publication number 20040036353
- Publication date Feb 26, 2004
- Michael D. Hasselbusch
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS