Roby A. Parks

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Springfield, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for retarding a work machine having a fluid-co...
- Patent number 6,030,314
- Issue date Feb 29, 2000
- Caterpillar Inc.
- Tom N. Brooks
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Foldable sawhorse
- Patent number 5,215,162
- Issue date Jun 1, 1993
- Roby A. Parks
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Foldable sawhorse
- Patent number D334811
- Issue date Apr 13, 1993
- Roby A. Parks
- D25 - Building units and construction elements