UNIVERSAL TUBULAR SYSTEMS, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5332161 Burner nozzle assemblyExpiredNov 30, 92Jul 26, 94[B05B]
4959791 Control system for enhancing gray tones of a digitally operated printerExpiredFeb 19, 88Sep 25, 90[G09G]
4591098 Apparatus for producing aerated waterExpiredAug 01, 83May 27, 86[B05B]
4450618 Tube fitting assembly method with deformable sealExpiredApr 26, 82May 29, 84[B23P, B21D]
4442586 Tube-to-tube joint methodExpiredMay 14, 81Apr 17, 84[B23P, B21D]
4330144 Tube fitting assembly with deformable sealExpiredJun 19, 78May 18, 82[F16L]
4321743 Tubing joint method of assemblyExpiredAug 29, 80Mar 30, 82[B23P, B21D]
4281862 Tubing joint assemblyExpiredOct 05, 78Aug 04, 81[F16L]
4277879 Tubing joint assembly methodExpiredNov 08, 79Jul 14, 81[B23P, B21D]
4269438 Tube-to-tube jointExpiredOct 16, 78May 26, 81[F16L]
4262942 Tube fitting assembly with shoulder meansExpiredSep 18, 78Apr 21, 81[F16L]
4231596 Tubing joint assemblyExpiredMar 17, 78Nov 04, 80[F16L]
4200314 Tube fitting assemblyExpiredNov 27, 74Apr 29, 80[F16L]

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