Assignee
CAMPBELL RICHARD
US3 patents
Top patents by PatentIndex Score
US9086118B2Jul 21, 2015
Locking pin with spring retention mechanism
CAMPBELL RICHARD11 citations77
US9119351B1Sep 1, 2015
Soil replacement method and system for seed germination and agricultural growing
CAMPBELL RICHARD1 citations50
US8424862B2Apr 23, 2013
Composite substrate feeding mechanism
CAMPBELL RICHARD0 citations50