United States Patent RE24613

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Primary Class:
428/121
Other Classes:
138/128, 428/157, 156/195, 24/DIG.050, 29/605, 156/304.500, 383/63, 24/584.100, 24/DIG.039, 428/184, 156/203
International Classes:
F16L9/17; F16L11/16; F16L58/10; F16L9/00; F16L11/00; F16L58/02