Granted Patent
Utility
US 5,404,683 · App. 08/021,801
Playground system
Inventors:
G. Thomas Hammonds, Carl A. Slear
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Feb 24, 1993
Inventors
G. Thomas Hammonds
Carl A. Slear
Assignee (at issue)
Iron Mountain Forge 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.