Granted Patent
Utility
US 4,676,176 · App. 06/794,176
Furnace grate
Inventor:
Vaifro V. Bonomelli
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Nov 1, 1985
Inventor
Vaifro V. Bonomelli
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.