Granted Patent
Utility
US 5,628,421 · App. 08/650,065
Floating roof
Inventor:
Ronald P. Jolly
Patented Case
View Patent ↗
Granted: May 13, 1997
Filed: May 16, 1996
Inventor
Ronald P. Jolly
Assignee (at issue)
HMT LLC
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.