Granted Patent
Utility
US 4,928,600 · App. 07/272,616
Railroad spike holding apparatus with acute angled jaws
Inventors:
William T. Urmson, Jr., Emeric Gaslevic, Ronald K. Junk
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Nov 17, 1988
Inventors
William T. Urmson, Jr.
Emeric Gaslevic
Ronald K. Junk
Assignee (at issue)
HARSCO CORPORATION
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.