Assignee
SPAN INC
US8 patents
Top patents by PatentIndex Score
US7130190B1Oct 31, 2006
Computer servicing cart
SPAN INC160 citations99
US5563496AOct 8, 1996
Battery monitoring and charging control unit
SPAN INC339 citations95
US5349282ASep 20, 1994
Battery charging and monitoring system
SPAN INC161 citations95
US4918368AApr 17, 1990
System for charging batteries and measuring capacities and efficiencies thereof
SPAN INC82 citations95
US4746854AMay 24, 1988
Battery charging system with microprocessor control of voltage and current monitoring and control operations
SPAN INC99 citations95
US5198743AMar 30, 1993
Battery charger with microprocessor control
SPAN INC79 citations93
US4935906AJun 19, 1990
Scanning sonar system
SPAN INC53 citations92
US6373676B1Apr 16, 2002
Magnetic floatation control system
SPAN INC28 citations88