Inventor

NIELSON LENNART

US3 patents

Patents

3 patents

US6789360B2Sep 14, 2004

Retractable roof system for stadium

UNI SYSTEMS LLC21 citations89

US6718696B2Apr 13, 2004

Movable wall for stadium

UNI SYSTEMS LLC26 citations89

US6698141B2Mar 2, 2004

Convertible stadium and method of operating

UNI SYSTEMS LLC25 citations89