Granted Patent
Utility
US 4,007,844 · App. 05/654,334
Self folding platform
Inventor:
William V. Perkins
Patented Case
View Patent ↗
Granted: Feb 15, 1977
Filed: Feb 2, 1976
Inventor
William V. Perkins
Assignee (at issue)
Maxon Industries, Inc.
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.