Granted Patent
Utility
US 4,986,045 · App. 07/379,215
Cellular raceway
Inventors:
Charles N. Domigan, J. David Harmon
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Jul 13, 1989
Inventors
Charles N. Domigan
J. David Harmon
Assignee (at issue)
BUTLER MANUFACTURING COMPANY
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.