IP Library › Granted Patent US 4,625,638
Granted Patent Utility
US 4,625,638 · App. 06/616,536

Dot matrix line printer

Inventors: William O. Fritz, John C. Chamberlain, Gary C. Chandler
Patented Case View Patent ↗
Granted: Dec 2, 1986 Filed: May 31, 1984
Inventors
William O. Fritz
John C. Chamberlain
Gary C. Chandler

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.

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Quick Facts
Patent No.
US 4,625,638
App. No.
06/616,536
Filed
1984-05-31
Granted
1986-12-02
Kind
A