Granted Patent
Utility
US 6,041,129 · App. 08/599,445
Hearing apparatus
Inventor:
Roger A. Adelman
Patented Case
View Patent ↗
Granted: Mar 21, 2000
Filed: Jan 18, 1996
Inventor
Roger A. Adelman
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.