Citada por|
| US4899486 | 2 Jun 1987 | 13 Feb 1990 | | Tree shelters | | US5345711 | 19 May 1993 | 13 Sep 1994 | | Treeshelter system for seedlings, saplings, and the like | | US6119392 | 29 Oct 1997 | 19 Sep 2000 | Treessentials Company | Seedling growth enhancing device | | US6138404 | 25 Sep 1997 | 31 Oct 2000 | Treessentials Company | Seedling growth enhancing device | | US6481155 | 11 May 2001 | 19 Nov 2002 | Kooringa Nursery Pty Ltd | Plant propagation |
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