Granted Patent
Utility
US 4,788,617 · App. 07/116,935
Liquid transfer apparatus
Inventor:
Gordon K. Davidson
Patented Case
View Patent ↗
Granted: Nov 29, 1988
Filed: Nov 4, 1987
Inventor
Gordon K. Davidson
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.