Granted Patent
Utility
US 5,522,289 · App. 08/336,381
Opening spring for pivoting hand tool
Inventor:
Daniel M. Eggert
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: Nov 8, 1994
Inventor
Daniel M. Eggert
Assignee (at issue)
Snap-on Incorporated
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.