Free span ceiling grid system

Assignee

• Usg Interiors

Inventors

• James J. Lehane (68 patents)
• Lee M. Tedesco (19 patents)
• Peder J. Gulbrandsen (85 patents)
• John M. Willi (5 patents)
• Donald J. Leahy (7 patents)
• Abraham M. Underkofler (60 patents)
• Yelena Straight (5 patents)
• Michael O'Donnell (10 patents)

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