Granted Patent
Utility
US 5,111,945 · App. 07/759,675
Boom extension alignment device
Inventors:
William E. Hull, Henry D. Barthalow
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Sep 13, 1991
Inventors
William E. Hull
Henry D. Barthalow
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.