Granted Patent
Utility
US 4,397,579 · App. 06/271,259
Expansion joint structures
Inventors:
Gerald L. Goldman, Joseph W. Gallagher, William A. Merlack
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: Jun 8, 1981
Inventors
Gerald L. Goldman
Joseph W. Gallagher
William A. Merlack
Assignee (at issue)
Columbia Chase Corporation
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.