Granted Patent
Utility
US 5,680,102 · App. 08/282,719
RF data communication link for wireless audible indication system
Inventor:
Thomas G. Xydis
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Jul 29, 1994
Inventor
Thomas G. Xydis
Assignee (at issue)
Dimango Products Corporation
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.