1
Melvin J Robey: System and process for providing durability enhanced area. Purdue Research Foundation, John R Nesbitt, May 17, 1977: US04023506 (60 worldwide citation)

A system and process is disclosed for providing a durability enhanced area that is particularly well suited for use as an athletic playing field. A vegetative crop has one or more layers of netting associated therewith so that each layer of netting has portions of the vegetative crop extending there ...


2
Melvin J Robey, David E Bingaman, Arthur E Read: Irrigation and drainage apparatus. M Reid Russell, October 6, 1981: US04293237 (25 worldwide citation)

The present invention constitutes an improved subsurface irrigation and drainage apparatus and system for its use that includes at least one main pipe or line arranged to receive a water flow therein that can include a water born fertilizer and, optionally, the main pipe or line can incorporate a fa ...