Granted Patent
Utility
US 5,528,875 · App. 08/331,371
Wood play tower kit
Inventors:
William H. Ziegler, Jr., Gary L. Lochner
Patented Case
View Patent ↗
Granted: Jun 25, 1996
Filed: Oct 27, 1994
Inventors
William H. Ziegler, Jr.
Gary L. Lochner
Assignee (at issue)
Hedstrom 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.