Browsing by Subject "47/65.5"
Now showing items 1-2 of 2
-
Air-root-pruning Container
(U.S. Patent and Trademark Office, 1985-04-16)A vertical air-root-pruning container involving a series of vertical air gaps displaced around the sidewall of a container. The air gaps are alternately displaced outwardly or inwardly to air-prune spiral root growth in ... -
Root-pruning Container
(U.S. Patent and Trademark Office, 1984-04-17)A root-pruning container involving a series of vertical pyramid like staircase stepped surfaces essentially parallel to the sidewall of said container and displaced to the inside of said container, wherein the vertical and ...