Granted Patent
Utility
US 6,389,143 · App. 09/250,512
Modular electroacoustic instrument
Inventors:
Marvin Allan Leedom, Walter P. Sjursen
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Feb 16, 1999
Inventors
Marvin Allan Leedom
Walter P. Sjursen
Assignee (at issue)
Sarnoff 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.