Granted Patent
Utility
US 4,867,819 · App. 07/082,476
Method and apparatus for fabricating modular building floor assemblies
Inventors:
Joseph Richardelli, Robert E. Thompson
Patented Case
View Patent ↗
Granted: Sep 19, 1989
Filed: Aug 7, 1987
Inventors
Joseph Richardelli
Robert E. Thompson
Assignee (at issue)
Cardinal Industries, Inc.
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.