SUPERIOR STEEL, INC., 21819 W. NINE MILE ROAD, SOUTHFIELD, MICHIGAN 48075 A MICHIGAN CORP.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4689867 Concrete reinforcement spacer and method of useExpiredJun 03, 85Sep 01, 87[B23P, E04C]
4598523 Reinforcement support spacerExpiredJan 17, 84Jul 08, 86[E04C]
4466467 Stackable stirrup matExpiredJun 18, 79Aug 21, 84[F16L]
4452026 Spacer for wire reinforcement in concrete structures such as pipeExpiredSep 28, 81Jun 05, 84[E04C]
4439972 Circumferential stirrup panelExpiredMar 08, 82Apr 03, 84[E04H]
4345626 Circumferential stirrup panelExpiredMay 20, 81Aug 24, 82[B21F]
4295497 Variegated stirrup matExpiredMay 04, 79Oct 20, 81[F16L, B21F]
4184520 Manually formable stirrup mat reinforcement and pipe reinforcing method based thereonExpiredDec 07, 77Jan 22, 80[B21F]

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