发明名称 Adjustable depth false floor for birdhouse
摘要 A false floor for a bird nesting/feeding box, bearing on at least one of the inner side walls for support, conveniently adjustable to various depths by hand, and, being of minimal thickness, capable of remaining permanently within the bird box even when desirable to lower the bird nest protectively to distance it from the bird entry hole through which predators insert body parts to seize nest contents. The invention permits improved drainage, ventilation, parasite control, and more convenient and thorough cleaning. The invention permits more convenient adapting of a nesting box to a feeding box.
申请公布号 US5269255(A) 申请公布日期 1993.12.14
申请号 US19920959396 申请日期 1992.10.13
申请人 FINN, JOSEPH 发明人 FINN, JOSEPH
分类号 A01K31/14;(IPC1-7):A01K31/00 主分类号 A01K31/14
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