Granted Patent
Utility
US 4,676,421 · App. 06/845,954
Press having a programmable ram with sensing means
Inventor:
Kenneth A. Swanstrom
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Mar 31, 1986
Inventor
Kenneth A. Swanstrom
Assignee (at issue)
Penn Engineering & Manufacturing Corp.
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.