HILTON & CHRIS ENTERPRISES A SOLE PROPRIATORSHIP

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5158137 Retrievable oil well capping deviceExpiredSep 30, 91Oct 27, 92[E21B]
5146995 Oil well fire extinguisher having upper and lower external flame retardant-dispersing ringsExpiredMay 06, 91Sep 15, 92[A62C]

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