Granted Patent
Utility
US 5,442,340 · App. 08/055,509
Trainable RF transmitter including attenuation control
Inventor:
Kurt Dykema
Patented Case
View Patent ↗
Granted: Aug 15, 1995
Filed: Apr 30, 1993
Inventor
Kurt Dykema
Assignee (at issue)
Prince 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.