Granted Patent
Utility
US 4,461,875 · App. 06/381,259
Roof sheeting and flashing elastomeric composition
Inventor:
Allen E. Crepeau
Patented Case
View Patent ↗
Granted: Jul 24, 1984
Filed: May 24, 1982
Inventor
Allen E. Crepeau
Assignee (at issue)
Uniroyal Ltd.
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.