Granted Patent
Utility
US 5,167,219 · App. 07/670,292
Frame assembly for a fireplace opening
Inventor:
Robert J. Ehmke
Patented Case
View Patent ↗
Granted: Dec 1, 1992
Filed: Mar 14, 1991
Inventor
Robert J. Ehmke
Assignee (at issue)
Design Specialties, 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.