Granted Patent
Utility
US 4,764,055 · App. 07/102,795
Resin reinforced expansion anchor system
Inventors:
Carl A. Clark, Raymond L. Wright
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Sep 23, 1987
Inventors
Carl A. Clark
Raymond L. Wright
Assignee (at issue)
Birmingham Bolt Co., Inc.
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.