SPACE/U.S.A., INC., A CORP. OF IL

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4742475 Environmental control systemExpiredSep 26, 84May 03, 88[G06F, F24F]
4527247 Environmental control systemExpiredJun 19, 84Jul 02, 85[H04Q, G06F]
4494256 Motorized pool coverExpiredOct 04, 82Jan 22, 85[E04H]
4471584 Unitized skylight structureExpiredFeb 24, 82Sep 18, 84[E06B, E04B, E04D, E04H]
4312157 Greenhouse with hinged roof sectionsExpiredMay 19, 80Jan 26, 82[E04B, A01G]
4183190 Space frame construction systemExpiredMay 01, 78Jan 15, 80[E04C]

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