Granted Patent
Utility
US 5,704,175 · App. 08/805,903
Multi-channel raceway for electric wires, cables and other elongated utility lines
Inventor:
Graham L. Lewis
Patented Case
View Patent ↗
Granted: Jan 6, 1998
Filed: Mar 4, 1997
Inventor
Graham L. Lewis
Assignee (at issue)
H. G. Kalish, 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.