Granted Patent
Utility
US 4,944,646 · App. 07/296,491
Highway transportable material storage apparatus and frame assembly therefor
Inventors:
M. Earl Edwards, Jr., James G. May
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: Jan 12, 1989
Inventors
M. Earl Edwards, Jr.
James G. May
Assignee (at issue)
Astec 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.