Granted Patent
Utility
US 4,252,313 · App. 06/031,156
Playground equipment
Inventor:
Gerald P. Skalka
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: Apr 18, 1979
Inventor
Gerald P. Skalka
Assignee (at issue)
VICTOR STANLEY, LLC
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.