Inventor
ROETTGER THOMAS DAVID
US2 patents
Patents
2 patentsUS6079026AJun 20, 2000
Uninterruptible memory backup power supply system using threshold value of energy in the backup batteries for control of switching from AC to DC output
IBM132 citations95
US5872984AFeb 16, 1999
Uninterruptible power supply providing continuous power mainstore function for a computer system
IBM103 citations95