Granted Patent
Utility
US 5,651,186 · App. 08/513,158
Liquid level vial and method for making the vial
Inventors:
Thomas Lindner, Joseph B. Coel
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Aug 9, 1995
Inventors
Thomas Lindner
Joseph B. Coel
Assignee (at issue)
Empire Level Mfg. 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.