Inventor
CALLAHAN THOMAS R
US8 patents
⚠️ This page may combine multiple inventors who share the name “CALLAHAN THOMAS R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AMSTED IND INC
6 patentsUS6089166AJul 18, 2000
Bolsters for railway trucks
AMSTED IND INC28 citations95
US5967053AOct 19, 1999
Sideframes for railway trucks
AMSTED IND INC54 citations95
US6662853B2Dec 16, 2003
Method of making bolsters and sideframes for railway car trucks
AMSTED IND INC30 citations94
US6622776B2Sep 23, 2003
Method of making sideframes for railway car trucks
AMSTED IND INC35 citations94
US5954114ASep 21, 1999
Method of making railway truck bolsters
AMSTED IND INC33 citations94
US5752564AMay 19, 1998
Railway truck castings and method and cores for making castings
AMSTED IND INC62 citations94