DS

David A. Spence

BE Berol: 1 patents #48 of 90Top 55%
NO Nordco: 1 patents #38 of 74Top 55%
RH Rite-Hite Holding: 1 patents #176 of 246Top 75%
Overall (All Time): #838,676 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10433525 Illuminated dog belt 2019-10-08
9938669 Roadworthy rail ballast regulator James W. Boyd, Justin J. Pipol, Michael Thompson 2018-04-10
8675331 Electronic gaming machine interface system 2014-03-18
8107240 Electronic gaming machine interface system 2012-01-31
5297921 Releasable locking device Scott L. Springer 1994-03-29
D268597 Drawing template 1983-04-12