Granted Patent
Utility
US 4,644,329 · App. 06/593,842
Edge of roof perimeter workman safety light device
Inventor:
Ralph H. Brueske
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Mar 27, 1984
Inventor
Ralph H. Brueske
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.