Discs with blades
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United States of America Patent
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-
Sep 13, 1988
Issued Date -
N/A
app pub date -
Mar 24, 1987
filing date -
Mar 1, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Slots are sawn into the edges of discs for pumps with a cup saw so as to produce blades having a curved cross-section. The blades may taper inwardly or outwardly or have no taper.
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