Granted Patent
Utility
US 4,480,541 · App. 06/374,265
Control system for dot matrix line printer
Inventor:
Lorne H. Grummett
Patented Case
View Patent ↗
Granted: Nov 6, 1984
Filed: May 3, 1982
Inventor
Lorne H. Grummett
Assignee (at issue)
Trilog, 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.