EG&G PRESSURE SCIENCE, INC.

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class

Expired/Abandoned/Withdrawn Patents

Patent # Title Filing Date Issue/Pub Date Intl Class
5,158,305 Pressure-energized two-element sealJan 31, 92Oct 27, 92[F16J]
4,854,600 Pressure balanced metallic S-sealAug 17, 88Aug 08, 89[F16J]
4,813,692 Pressure balanced S-sealJan 21, 87Mar 21, 89[F16J]
4,779,901 Sealed rigid pipe jointJan 09, 87Oct 25, 88[F16L]
4,681,353 V-coupling for installation in narrow annular spacesJul 17, 84Jul 21, 87[F16L]
4,643,463 Gimbal joint for piping systemsFeb 06, 85Feb 17, 87[F16L]
4,589,666 Slip joint assembly for a split ring sealJul 25, 85May 20, 86[F16J]
4,218,067 Multi-ply sealing ringsFeb 02, 79Aug 19, 80[F16J]

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