United States Patent 0599543

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Primary Class:
248/160
Other Classes:
74/502.500, 362/413, 138/134, 74/502.200, D26/103, 138/139, 138/131, 248/276.100
International Classes:
F16M11/40; F21S6/00; F21V21/32; F21V27/00; F16M11/20; F21V21/14