Granted Patent
Utility
US 4,457,637 · App. 06/422,923
Squeeze printing mechanism
Inventor:
Frederick P. Willcox
Patented Case
View Patent ↗
Granted: Jul 3, 1984
Filed: Sep 24, 1982
Inventor
Frederick P. Willcox
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.