Granted Patent
Utility
US 6,148,573 · App. 09/191,861
Non coatable drywall finishing system
Inventor:
Timothy Smythe
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Nov 12, 1998
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.