Granted Patent
Utility
US 4,381,846 · App. 06/214,977
Refill with flexible mesh screen for liquid dispenser
Inventor:
Samuel C. Heck
Patented Case
View Patent ↗
Granted: May 3, 1983
Filed: Dec 10, 1980
Inventor
Samuel C. Heck
Assignee (at issue)
Sani-Fresh International, Inc.
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.