United States Patent 1207278

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Primary Class:
222/131
Other Classes:
222/146.600, 137/334, 222/185.100, 137/588, 248/147, 62/396, 222/484, 222/146.100, 222/481, 137/595
International Classes:
B67D3/00; F25D3/08; F25D3/00