Granted Patent
Utility
US 6,016,826 · App. 08/533,774
Automatic center cavity equalizing valve
Inventors:
Earl A. Bake, Leonard J. Stephens
Patented Case
View Patent ↗
Granted: Jan 25, 2000
Filed: Sep 26, 1995
Inventors
Earl A. Bake
Leonard J. Stephens
Assignee (at issue)
M&FC Holding, LLC
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.