Granted Patent
Utility
US 4,495,529 · App. 06/375,933
Qualifier circuit
Inventor:
Roy Gustafson
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: May 7, 1982
Inventor
Roy Gustafson
Assignee (at issue)
Digital Equipment 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.