PB

Peter Birrell

HP Hpm Industries Pty: 4 patents #1 of 4Top 25%
Overall (All Time): #1,269,075 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6563273 Two-wire controlled switching 2003-05-13
5990628 Light level sensor for detecting the level of incident light and discriminating between natural and artificial light 1999-11-23
5825019 Timing device capable of synchronizing initiation time 1998-10-20
5808851 Controlled switching 1998-09-15