Granted Patent
Utility
US 4,403,712 · App. 06/341,208
Snap hinge of plastic material
Inventor:
Wilhelm Wiesinger
Patented Case
View Patent ↗
Granted: Sep 13, 1983
Filed: Jan 21, 1982
Inventor
Wilhelm Wiesinger
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.