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United States Patent 2623575
US Patent References:
/0394649.html
- - 0394649

/0471049.html
- - 0471049

/0567922.html
- - 0567922


Inventors:
Philip, Challis
Publication Date:
12/30/1952
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Assignee:
Philip, Challis
Primary Class:
297/401
International Classes:
A47C7/38; A47C7/36