发明名称 Birch tree
摘要 A novel birch tree is described, characterized by white bark, a pyramidal shaped crown, strong upwardly arching branches angled at approximately 45 DEG from the trunk, resistance to Winter die-back in Rocky Mountain climates, and large foliage.
申请公布号 US6192(P) 申请公布日期 1988.05.31
申请号 US19850689812 申请日期 1985.01.08
申请人 J. FRANK SCHMIDT & SON CO. 发明人 SABELL, WALLACE H.
分类号 A01H5/00;(IPC1-7):A01H5/00 主分类号 A01H5/00
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