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Flush valve system
United States Patent 2543438
US Patent References:
/0301868.html
- - 0301868
/0441097.html
- - 0441097
/0994793.html
- - 0994793
Inventors:
Cochran, Francis R.
Publication Date:
02/27/1951
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Download PDF 2543438
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Assignee:
Cochran, Francis R.
Primary Class:
4/411
International Classes:
E03D1/012
;
E03D1/34
;
E03D1/00
;
E03D1/30