Granted Patent
Utility
US 6,060,652 · App. 09/178,752
Tunable drum support
Inventor:
Donald G. Lombardi
Patented Case
View Patent ↗
Granted: May 9, 2000
Filed: Oct 26, 1998
Inventor
Donald G. Lombardi
Assignee (at issue)
Drum Workshop, 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.