Granted Patent
Utility
US 5,850,144 · App. 08/923,068
Method for detecting leaks in a membrane
Inventors:
Harvey Howells, Guillermo M. Torres
Patented Case
View Patent ↗
Granted: Dec 15, 1998
Filed: Sep 3, 1997
Inventors
Harvey Howells
Guillermo M. Torres
Assignee (at issue)
Serrot Corporation
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.