Granted Patent
Utility
US 4,478,152 · App. 06/446,413
Railroad scrap pick up machine
Inventor:
John D. Holley
Patented Case
View Patent ↗
Granted: Oct 23, 1984
Filed: Dec 2, 1982
Inventor
John D. Holley
Assignee (at issue)
Holley Engineering Company, 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.