Granted Patent
Utility
US 4,453,349 · App. 06/236,188
Floor and roof deck
Inventor:
Thomas G. Ryan
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Feb 20, 1981
Inventor
Thomas G. Ryan
Assignee (at issue)
Cyclops Corporation
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.