Granted Patent
Utility
US 5,588,217 · App. 08/397,430
Level vial assembly with encapsulated vial
Inventors:
Thomas Lindner, Joseph B. Coel
Patented Case
View Patent ↗
Granted: Dec 31, 1996
Filed: Mar 1, 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.