Granted Patent
Utility
US 4,899,151 · App. 06/915,784
Apparatus for converting digital values to analog values
Inventor:
Joseph H. Colles
Patented Case
View Patent ↗
Granted: Feb 6, 1990
Filed: Oct 6, 1986
Inventor
Joseph H. Colles
Assignee (at issue)
Brooktree 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.