Granted Patent
Utility
US 4,253,369 · App. 05/917,308
Digital control of attack and decay
Inventor:
William R. Hoskinson
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: Jun 20, 1978
Inventor
William R. Hoskinson
Assignee (at issue)
The Wurlitzer Company
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.