Inventor
GUTH RICHARD U
US9 patents
⚠️ This page may combine multiple inventors who share the name “GUTH RICHARD U”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GUTH RICHARD U
6 patentsUS4292978AOct 6, 1981
Breath test mouthpiece
GUTH RICHARD U61 citations94
US4407152AOct 4, 1983
Breath test simulator and method
GUTH RICHARD U55 citations91
US4353869AOct 12, 1982
Ampoule assembly and holder
GUTH RICHARD U50 citations91
US7493793B2Feb 24, 2009
Breath test simulator
GUTH RICHARD U18 citations83
US8667829B2Mar 11, 2014
Breath test simulator and method
GUTH RICHARD U14 citations80
USD272559SFeb 7, 1984
Breath test mouth-piece
GUTH RICHARD U5 citations61