DB

David N. Ball

GL Graviner Limited: 5 patents #1 of 13Top 8%
Overall (All Time): #895,903 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
4603255 Fire and explosion protection system Richard V. Henry, Robert L. Farquhar, Vincent M. Rowe, Peter L. Hutchins 1986-07-29
4423326 Fire or explosion detection 1983-12-27
4421984 Fire and explosion detection and suppression Robert L. Farquhar 1983-12-20
4414542 Two channel comparison-type fire or explosion detecting system Robert L. Farquhar 1983-11-08
4373136 Fire and explosion detection 1983-02-08
4357534 Fire and explosion detection 1982-11-02