Granted Patent
Utility
US 4,326,813 · App. 06/087,681
Dot matrix character printer control circuitry for variable pitch printing
Inventors:
Roy F. Lomicka, Jr., Peter N. Heller
Patented Case
View Patent ↗
Granted: Apr 27, 1982
Filed: Oct 23, 1979
Inventors
Roy F. Lomicka, Jr.
Peter N. Heller
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.