Granted Patent
Utility
US 4,559,753 · App. 06/704,517
Method of installing a prefabricated curb unit to a standing seam roof
Inventor:
Ralph H. Brueske
Patented Case
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Granted: Dec 24, 1985
Filed: Feb 22, 1985
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.