Disposable toothbrush containing a dentifrice
作者： William E Lyons
DOI:
关键词:
摘要:
lens.org 参考文章(4)
Seifert Charles Henry, Tooth cleaning element ,(1937)
Harry R. Rathbun, Tooth cleaning applicator ,(1948)
Landers John, Dental cleaning and massage device ,(1936)
Byron C Brunstetter, Article of manufacture ,(1932)