Inventor

POORMAN RICHARD N

US4 patents

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

CUMMINS ELECTRONICS

2 patents

US5352901AOct 4, 1994

Forward and back scattering loss compensated smoke detector

CUMMINS ELECTRONICS118 citations94

US5424842AJun 13, 1995

Self-cleaning system for monitoring the opacity of combustion engine exhaust using venturi effect

CUMMINS ELECTRONICS31 citations89

ALLIED SIGNAL INC

1 patent

US4852079AJul 25, 1989

Optical spectral analyzer

ALLIED SIGNAL INC31 citations91

BRUNSWICK CORP

1 patent

US7727036B1Jun 1, 2010

System and method for controlling movement of a marine vessel

BRUNSWICK CORP47 citations90