Granted Patent
Utility
US 4,709,721 · App. 07/027,542
Integral base refill system ballcock assembly
Inventor:
Larry D. Gish
Patented Case
View Patent ↗
Granted: Dec 1, 1987
Filed: Mar 18, 1987
Inventor
Larry D. Gish
Assignee (at issue)
Johnson Service 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.