| http://www.w3.org/ns/prov#value | - The preferred embodiment described includes a material, as for example a mineral jelly, which is in contact with a wick, such as a paper strip, such that the mineral jelly diffuses into the paper in accordance...http://www.google.com/patents/US4382700?utm_source=gb-gplus-sharePatent US4382700 - Shelf life indicatorAdvanced Patent SearchPublication numberUS4382700 APublication typeGrantApplication
|
