DS

Derrel Spencer

CA Cactus: 2 patents #3 of 6Top 50%
Overall (All Time): #1,244,561 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7832705 Grade bracket for use in concrete form system Kurtis Jones 2010-11-16
7780894 System for defining openings in tilt-up walls Kurtis Jones 2010-08-24
7331560 Concrete form systems L. Alma Jessop 2008-02-19
7290749 Concrete form systems with concrete ties L. Alma Jessop 2007-11-06