Granted Patent
Utility
US 4,898,061 · App. 07/370,164
Block-type percussion instrument
Inventors:
Wayne Cohen, Donald Kralik
Patented Case
View Patent ↗
Granted: Feb 6, 1990
Filed: Jun 22, 1989
Inventors
Wayne Cohen
Donald Kralik
Assignee (at issue)
Latin Percussion Inc.
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.