Granted Patent
Utility
US 4,558,302 · App. 06/505,638
High speed data compression and decompression apparatus and method
Inventor:
Terry A. Welch
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Jun 20, 1983
Inventor
Terry A. Welch
Assignee (at issue)
Sperry Corp.
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.