Inventor

WISNIEWSKI CHARLES A

US2 patents

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

WESTINGHOUSE AIR BRAKE TECH CORP

1 patent

US9457821B2Oct 4, 2016

Railroad signaling and communication system using a fail-safe voltage sensor to verify trackside conditions in safety-critical railroad applications

WESTINGHOUSE AIR BRAKE TECH CORP1 citations45

PRETORIUS FRANCOIS

1 patent

US8989926B2Mar 24, 2015

Railroad signaling and communication system using a fail-safe voltage sensor to verify trackside conditions in safety-critical railroad applications

PRETORIUS FRANCOIS1 citations38