Granted Patent
Utility
US 5,206,914 · App. 07/738,826
Electrostatic acoustic transducer having extremely thin diaphragm substrate
Inventors:
Neil K. Fortney, Manfred W. Suhr
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Aug 1, 1991
Inventors
Neil K. Fortney
Manfred W. Suhr
Assignee (at issue)
Koss 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.