Granted Patent
Utility
US 5,262,113 · App. 07/926,750
Method of making a plastic encased tool component having a lightweight hollow core
Inventor:
Joseph A. Carmien
Patented Case
View Patent ↗
Granted: Nov 16, 1993
Filed: Aug 6, 1992
Inventor
Joseph A. Carmien
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.