Plant tube for use in flower pots
Patent 5031356 Issued on July 16, 1991. Estimated Expiration Date: 
September 29, 2008. 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 29, 2008. 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 3188771 Planting container Fin-stabilized container of foldable sheet material Method of growing grapevines Patent #: 4457102 InventorAssigneeApplicationNo. 250612 filed on 09/29/1988US Classes:47/47, Vertical47/77SeedlingExaminersPrimary: Hafer, Robert A.Assistant: Cofsky, Lynda M. Attorney, Agent or FirmForeign Patent References
International ClassA01G 017/06AbstractA plant tube (6) for insertion into a plant pot (2) in a substantially upright position. The plant tube (6) includes an at least partly open, non-narrowing lower end (12), with at least one planar thin walled protrusion (20) provided at the lower end (12) for defining at least one root penetration opening enabling the roots of the plant in the plant tube (6) to freely penetrate radially outwardly and downwardly from the plant tube (6). | |
