Inventor
BECKMANN FRIEDRICH K
DE4 patents
Patents
4 patentsUS4702557AOct 27, 1987
Optical branching device using a liquid crystal
PHILIPS CORP24 citations79
US4559467ADec 17, 1985
Ion-generator for producing an air flow
PHILIPS CORP23 citations75
US4538125AAug 27, 1985
Device for microwave transmission between two bodies which are rotatable relative to each other
PHILIPS CORP18 citations72
US4496202AJan 29, 1985
Device for high voltage transfer between two parts which are rotatable relative to each other
PHILIPS CORP8 citations71