专利名称：Pene梦故
tration test kit 发明人：Norman B. Hess
申请号：US06/348116
申请日：19820211
公开号：US04483182A
公开日：
19841120
专利内容由知识产权出版社提供
摘要：An apparatus is provided to measure the wetting efficacy of certain dust control chemical 赤血长殷
additives. The additives are commonly sprayed500字作文大全
on the dust to control and/or prevent the dismination of the dust into the atmosphere. The 老歌曲大全100首
device compris a plurality of dust collection cylinders, eac钢琴弹奏入门
h of which is adapte中国宜居城市排名
d to retain a dust sample and the particular chemical additive for which testing is 搞笑诗词
desired. A support is provided to support the cylinders and a visual display is operatively associated with the cylinders so烛之武退秦师注释
as to indicate when th便血的原因有哪些
e particular additive has completely penetrated the dust and thereby contacted the visual display.
申请人：B草船借箭的读后感
ETZ LABORATORIES, INC.
代理人：Alexander D. Ricci,Bruce E. Peacock
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