Granted Patent
Utility
US 5,103,992 · App. 07/762,650
Shoe seal for floating roof of storage tank, and method of installing same
Inventors:
Patrick L. Lippiello, David W. Otto
Patented Case
View Patent ↗
Granted: Apr 14, 1992
Filed: Sep 19, 1991
Inventors
Patrick L. Lippiello
David W. Otto
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.