Granted Patent
Utility
US 6,830,721 · App. 10/342,556
Liquid dispensing closure
Inventor:
Douglas S. Martin
Patented Case
View Patent ↗
Granted: Dec 14, 2004
Filed: Jan 15, 2003
Inventor
Douglas S. Martin
Assignee (at issue)
Weatherchem Corporation
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.