Granted Patent
Utility
US 5,893,246 · App. 08/541,947
Adjustable prefabricated 3-way inside drywall corner
Inventor:
Timothy Smythe
Patented Case
View Patent ↗
Granted: Apr 13, 1999
Filed: Oct 10, 1995
Inventor
Timothy Smythe
Assignee (at issue)
Drywall Systems International 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.