Granted Patent
Utility
US 4,296,923 · App. 06/084,053
Playground swing
Inventor:
Paul W. Ahrens
Patented Case
View Patent ↗
Granted: Oct 27, 1981
Filed: Oct 11, 1979
Inventor
Paul W. Ahrens
Assignee (at issue)
Miracle Recreation Equipment Company
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.