Inventor

DERDZINSKI ALAN EDMUND

US4 patents

Patents

4 patents

USD744458SDec 1, 2015

Speaker microphone

OTTO ENGINEERING12 citations80

USD743950SNov 24, 2015

Speaker microphone

OTTO ENGINEERING12 citations80

US9386368B2Jul 5, 2016

Remote speaker microphone

OTTO ENGINEERING3 citations69

USD734304SJul 14, 2015

Speaker microphone

OTTO ENGINEERING0 citations48