Granted Patent
Utility
US 6,292,002 · App. 09/375,211
Crystal resonant frequency sensor
Inventors:
Ralph Pringle, Jr., Felix E. Morgan
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Aug 16, 1999
Inventors
Ralph Pringle, Jr.
Felix E. Morgan
Assignee (at issue)
B. F. Goodrich Company
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.