Suction device, especially for use in dentistry
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United States of America Patent
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-
Mar 22, 1994
Grant Date -
N/A
app pub date -
Aug 17, 1992
filing date -
Aug 24, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A two-stage side-channel compressor has in the central portion of its rotor (24) vanes (64) forming a radial compressor stage which allow a first side-channel (44) placed radially outward to be connected to an intake (18) on the central axis of the casing without any increase in the dimensions of the casing and without any loss of pressure.
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