Robert R. Simens

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Solon, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Mega pyramid stadium complex
- Patent number 6,832,452
- Issue date Dec 21, 2004
- Robert R. Simens
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Inflatable roof support systems
- Patent number 6,282,842
- Issue date Sep 4, 2001
- Robert R. Simens
- E04 - BUILDING