Granted Patent
Utility
US 4,862,730 · App. 07/252,832
Test method for determination of moisture vapor transmission rate
Inventor:
Philip M. Crosby
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Oct 3, 1988
Inventor
Philip M. Crosby
Assignee (at issue)
W. L. Gore & Associates, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.