Inventor
BALLI ROBERT E
US4 patents
Patents
4 patentsUS6737823B2May 18, 2004
Door operator control system and method
OVERHEAD DOOR CORP49 citations94
US6388412B1May 14, 2002
Door operator control system and method
OVERHEAD DOOR CORP71 citations94
US6422965B1Jul 23, 2002
Door operator unit
OVERHEAD DOOR CORP54 citations91
US6530863B2Mar 11, 2003
Door operator unit
OVERHEAD DOOR CORP32 citations88