United States Patent 2733713
US Patent References:
Remote-control switch for pumping systems
- - 1792245

Valve
- - 2197995

Pump unit and stand
- - 2295982

Lubricating apparatus
- - 2634885


Publication Date:
02/07/1956
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Primary Class:
604/151
Other Classes:
601/162, 604/245, 604/250
International Classes:
A61C17/024