Granted Patent
Utility
US 4,552,285 · App. 06/581,564
Unloading device
Inventor:
Rene Luscher
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Feb 21, 1984
Inventor
Rene Luscher
Assignee (at issue)
Gretag Aktiengesellschaft
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.