Granted Patent
Utility
US 4,728,249 · App. 06/807,553
Telescoping boom assembly with longitudinally displaceable base boom section
Inventor:
John W. Gano
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: Dec 11, 1985
Inventor
John W. Gano
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.