Granted Patent
Utility
US 5,345,135 · App. 08/010,072
Interdigital transducer for use in a surface acoustic wave filter
Inventor:
Robert C. Peach
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Jan 26, 1993
Inventor
Robert C. Peach
Assignee (at issue)
COM DEV 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.