Granted Patent
Utility
US 5,927,520 · App. 08/539,953
Electro-hydraulic operating system for extensible boom crane
Inventors:
Henry D. Barthalow, William E. Hull, Claude R. Zimmerman
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Oct 6, 1995
Inventors
Henry D. Barthalow
William E. Hull
Claude R. Zimmerman
Assignee (at issue)
Kiddie 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.