Granted Patent
Utility
US 5,707,539 · App. 08/524,652
Concrete form with safety bar
Inventors:
Robert J. Flathau, Alan E. Soltysik, Robert Spindler
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Sep 8, 1995
Inventors
Robert J. Flathau
Alan E. Soltysik
Robert Spindler
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.