Granted Patent
Utility
US 4,850,307 · App. 07/116,557
Intake cup apparatus
Inventor:
Keith Sheets
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Nov 3, 1987
Inventor
Keith Sheets
Assignee (at issue)
CTB HOLDINGS 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.