JB

John A. Beukema

RC Reliable Automatic Sprinkler Co.: 2 patents #13 of 33Top 40%
GC Grinnell Fire Protection Systems Company: 1 patents #3 of 7Top 45%
Overall (All Time): #1,628,296 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6068057 Dry pipe valve system 2000-05-30
5720351 Fire protection preaction and deluge control arrangements Thomas Multer 1998-02-24
4408788 Hingeable split pipe collar 1983-10-11