Steven M. Donaldson

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Ontario, CA

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Patents Grantslast 30 patents

Information Patent Grant
Portable ice rink building and resurfacing device
- Patent number 7,380,355
- Issue date Jun 3, 2008
- Steven M. Donaldson
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

Information Patent Application
Portable ice rink building and resurfacing device
- Publication number 20060272181
- Publication date Dec 7, 2006
- Steven M. Donaldson
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES