Granted Patent
Utility
US 4,640,633 · App. 06/710,633
High-speed wire print head with wire print position shift apparatus
Inventor:
Donald G. Hebert
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Mar 15, 1985
Inventor
Donald G. Hebert
Assignee (at issue)
DH TECHNOLOGY, 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.