Granted Patent
Utility
US 4,833,430 · App. 07/025,445
Coupled-dual resonator crystal
Inventors:
Gerald E. Roberts, Samuel Toliver, Robert J. Crescenzi
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Mar 13, 1987
Inventors
Gerald E. Roberts
Samuel Toliver
Robert J. Crescenzi
Assignee (at issue)
General Electric 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.