Method of growing grapevines
Patent 4457102 Issued on July 3, 1984. Estimated Expiration Date: 
September 27, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 27, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 94169 1987255 2192939 3302325 3828473 Root control planter Patent #: 4019279 InventorApplicationNo. 06/424807 filed on 09/27/1982US Classes:47/58.1R, PROCESS111/102, Through mulch111/114, Plant containing receptacle impressed into soil43/108, Tree trunk47/30, Open top47/32, Root47/32.7, ROOT TRAINER, OR BARRIER47/47, Vertical47/77SeedlingExaminersPrimary: Feyrer, James R.Attorney, Agent or FirmInternational ClassesA01G 7/00 (20060101)A01G 17/00 (20060101) AbstractOpen ended tubes which are impervious to water and having a length of at least two feet are placed in holes in the ground. The tubes are filled with a sterile growing medium. The vines are planted in said growing medium. The exposed portion of the medium is covered by a filter material porous to water but impervious to pests. The tubes force the roots to grow downwardly and then out the bottom end of the tubes and then horizontally into the native soil.Other References
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