Granted Patent
Utility
US 5,310,153 · App. 08/028,876
Quick release washer for a shoring post
Inventor:
George W. Jackson
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Apr 26, 1993
Inventor
George W. Jackson
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.