Granted Patent
Utility
US 4,627,344 · App. 06/721,994
Impact printer with magnetic interaction compensation
Inventor:
Robert E. Costello
Patented Case
View Patent ↗
Granted: Dec 9, 1986
Filed: Apr 11, 1985
Inventor
Robert E. Costello
Assignee (at issue)
Centronics Data Computer 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.