A - Human Necessities – 01 – N
Patent
A - Human Necessities
01
N
47/21, 71/40, 13
A01N 33/18 (2006.01) A01N 25/34 (2006.01) E03F 3/04 (2006.01) F16L 21/02 (2006.01) F16L 57/00 (2006.01)
Patent
CA 1323770
ABSTRACT OF THE DISCLOSURE This invention relates to the exclusion of roots from underground pipelines. This is done by positioning, in the joints of the pipes, an organic polymer mixed with a dinitro- aniline, for example, trifluralin. The composition may be placed in the joint in the form of a ring of material.
576149
Burton Frederick G.
Cataldo Dominic A.
Cline John F.
Skiens W. Eugene
Van Voris Peter
Battelle Memorial Institute Pacific Northwest Division
Fetherstonhaugh & Co.
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