Granted Patent
Utility
US 4,822,237 · App. 06/800,577
Extended reach materials handling apparatus
Inventors:
Joseph A. Meyer, John H. Frank
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: Nov 21, 1985
Inventors
Joseph A. Meyer
John H. Frank
Assignee (at issue)
The Gradall 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.