| http://www.w3.org/ns/prov#value | - Patent US4335193 - Microporous film, particularly battery separator, and method of making - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsThis invention is directed to a microporous film comprising a 40 to 90 volume percent polyolefin having a number average molecular weight of 15,000 or more and a weight average molecular weight of less
|
