Burton, Parker & Schramm, P.C.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4996752 Stud and eyelet fastenerExpiredJan 18, 82Mar 05, 91[F16B]
4732190 Shut-off valve and method for using sameExpiredFeb 26, 86Mar 22, 88[F16K]
4646399 Snap fastenerExpiredFeb 21, 86Mar 03, 87[A44B]
D283872 Retaining clipExpiredApr 11, 83May 20, 86[]
4577376 Snap fastenerExpiredAug 10, 83Mar 25, 86[A44B]
4409706 Stud and eyelet fastenerExpiredJan 18, 82Oct 18, 83[A44B]

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