Inventor

PERLAK LESTER K

US3 patents

Patents

3 patents

US10339097B2Jul 2, 2019

History archive of live audio and methods of using the same

SIEMENS INDUSTRY INC2 citations67

US10249174B2Apr 2, 2019

Wireless emergency alert notifications

SIEMENS INDUSTRY INC6 citations67

US9721459B2Aug 1, 2017

Live paging system and methods of using the same

SIEMENS INDUSTRY INC0 citations31