Granted Patent
Utility
US 5,570,513 · App. 08/574,533
Headspace gauge
Inventor:
Thomas K. M. Peterson
Patented Case
View Patent ↗
Granted: Nov 5, 1996
Filed: Dec 19, 1995
Inventor
Thomas K. M. Peterson
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.