Granted Patent
Utility
US 4,747,251 · App. 06/902,607
Portable bin transfer system
Inventors:
Donald W. Van Doorn, James B. Hawkins, Francis W. Carpenter, III, Wilbur G. Hudson, Tommy W. Webb, William D. Beeland
Patented Case
View Patent ↗
Granted: May 31, 1988
Filed: Sep 2, 1986
Inventors
Donald W. Van Doorn
James B. Hawkins
Francis W. Carpenter, III
Wilbur G. Hudson
Tommy W. Webb
William D. Beeland
Assignee (at issue)
Lummus 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.