Inventor
LEHRMANN JOSHUA E
US6 patents
⚠️ This page may combine multiple inventors who share the name “LEHRMANN JOSHUA E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GM GLOBAL TECH OPERATIONS INC
5 patentsUS7473199B2Jan 6, 2009
Two-planetary electrically variable transmissions with multiple fixed ratios
GM GLOBAL TECH OPERATIONS INC27 citations92
US7387586B2Jun 17, 2008
Three planetary electrically variable transmissions with mechanical reverse
GM GLOBAL TECH OPERATIONS INC15 citations84
US7752935B2Jul 13, 2010
Control system for a multi-speed transmission
GM GLOBAL TECH OPERATIONS INC11 citations82
US7896775B2Mar 1, 2011
Control system for electronic range selection in a dual clutch transmission
GM GLOBAL TECH OPERATIONS INC5 citations60
US7828684B2Nov 9, 2010
Control system for a differential in a transmission
GM GLOBAL TECH OPERATIONS INC3 citations60