Granted Patent
Utility
US 5,817,921 · App. 08/679,258
Piezoelectric enviromental fluid monitoring assembly and method
Inventors:
Glenn M. Tom, Cynthia A. Miller
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Jul 12, 1996
Inventors
Glenn M. Tom
Cynthia A. Miller
Assignee (at issue)
ADVANCED TECHNOLOGY & MATERIALS CO., LTD.
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.