PITTCO ENGINEERED SYSTEMS, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4738065 Curtainwall systemExpiredJan 02, 87Apr 19, 88[E04B]
4633631 Curtainwall systemExpiredJun 27, 85Jan 06, 87[E04B]
4625481 Replacement panel and method of installing same in a curtainwallExpiredSep 07, 84Dec 02, 86[E04B]
4543755 Curtainwall systemExpiredJan 20, 84Oct 01, 85[E04H]
4307551 System for cladding building exteriorsExpiredAug 09, 79Dec 29, 81[E04B]

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