Granted Patent
Utility
US 6,318,497 · App. 09/571,569
Pressure-sensitive switch, its method of calibration and use in a hydrophone array
Inventors:
Thomas J. de Groot, Glen Ferguson, William H. Hulsman, Robert Claude Prescott, Richard D. Smith
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: May 15, 2000
Inventors
Thomas J. de Groot
Glen Ferguson
William H. Hulsman
Robert Claude Prescott
Richard D. Smith
Assignee (at issue)
Benthos, 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.