1
David W Robertson: Plant mat and method. Grass Ventures, Mason Fenwick & Lawrence, July 13, 1993: US05226255 (36 worldwide citation)

A mat for plant cultivation comprises upper and lower portions of non-woven fibers, substantially all of which are preferably natural, biodegradable fiber; an intermediate layer of bi-laterally stable plastic mesh, of high strength relative to the non-woven fiber layers, is structurally joined to th ...


2
Robertson David W: Plant mat and method. Environmental Sod, LAVINE Irvin A, June 11, 1992: WO/1992/009193

A mat (30) for plant cultivation comprises upper and lower portions of non-woven fibers (10), substantially all of which are preferably natural, biodegradable fiber; an intermediate layer of bi-laterally stable plastic mesh (12) of high strength relative to the non-woven fiber layers, is structurall ...



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