Granted Patent
Utility
US 4,385,955 · App. 06/300,335
Method of forming contoured fiberglass sheet
Inventors:
Ralph G. Doerfling, Donald Warner
Patented Case
View Patent ↗
Granted: May 31, 1983
Filed: Sep 8, 1981
Inventors
Ralph G. Doerfling
Donald Warner
Assignee (at issue)
Detroit Gasket
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.