Granted Patent
Utility
US 6,647,764 · App. 09/830,396
Quartz crystal microbalance with feedback loop for automatic gain control
Inventors:
Frank Paul, Karl Pavey, Richard C. Payne
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Jun 29, 2001
Inventors
Frank Paul
Karl Pavey
Richard C. Payne
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.