Granted Patent
Utility
US 4,486,003 · App. 06/568,866
Gate valve structure
Inventors:
Danny S. Meyer, George A. Moran
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Jan 6, 1984
Inventors
Danny S. Meyer
George A. Moran
Assignee (at issue)
Joy Manufacturing Company
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.