Inventor
BATES ROY C
US4 patents
Patents
4 patentsUS5676348AOct 14, 1997
Asymmetric seal segment configuration
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US4867483ASep 19, 1989
Pipe connector device
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US5713389AFeb 3, 1998
Check valve and check valve seat
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US6007048ADec 28, 1999
Satellite seal arrangement for plug valve, ball valve or gate valve
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