Granted Patent
Utility
US 4,465,257 · App. 06/338,345
Concrete forming structure having a double hinge filler
Inventor:
Vernon R. Schimmel
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Jan 15, 1982
Inventor
Vernon R. Schimmel
Assignee (at issue)
Symons 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.