Granted Patent
Utility
US 5,712,539 · App. 08/483,521
Digital acoustic noise reduction in electric motors driven by switching power amplifiers
Inventors:
James Zweighaft, Mark Moyer, Christopher Koerner
Patented Case
View Patent ↗
Granted: Jan 27, 1998
Filed: Jun 7, 1995
Inventors
James Zweighaft
Mark Moyer
Christopher Koerner
Assignee (at issue)
Exabyte 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.