Inventor

BOHLEN JOHN RELMAN

US3 patents

Patents

3 patents

US7357828B2Apr 15, 2008

Air cleaner including constant current power supply

ORECK HOLDINGS LLC21 citations87

US7625424B2Dec 1, 2009

Air cleaner and shut-down method

ORECK HOLDINGS LLC7 citations71

US7857893B2Dec 28, 2010

Air cleaner and shut-down method

ORECK HOLDINGS LLC4 citations60