Granted Patent
Utility
US 4,846,433 · App. 07/217,109
Adjustable hanger
Inventors:
Peter D. Courtois, Roy L. Edgar
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Jul 11, 1988
Inventors
Peter D. Courtois
Roy L. Edgar
Assignee (at issue)
DAYTON SUPERIOR 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.