Inventor

GRACZYK FRANK M

US5 patents

⚠️ This page may combine multiple inventors who share the name “GRACZYK FRANK M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ELECTRO MOTIVE DIESEL INC

3 patents

US7370627B2May 13, 2008

Optimized low emission two-stroke internal combustion diesel engine

ELECTRO MOTIVE DIESEL INC26 citations88

US7311086B2Dec 25, 2007

Low emission fuel efficient diesel locomotive engine including a piston having a toroidal surface

ELECTRO MOTIVE DIESEL INC11 citations81

US7025031B2Apr 11, 2006

Low emission fuel efficient diesel locomotive engine including a piston having a toroidal surface

ELECTRO MOTIVE DIESEL INC14 citations81

GEN MOTORS CORP

1 patent

US6866028B2Mar 15, 2005

Emission reduction kit for EMD diesel engines

GEN MOTORS CORP8 citations69

PROGRESS RAIL LOCOMOTIVE INC

1 patent

US10359112B2Jul 23, 2019

Piston ring set for internal combustion engine and system and method thereof

PROGRESS RAIL LOCOMOTIVE INC1 citations59