Granted Patent
Utility
US 6,510,971 · App. 09/974,484
Liquid dispensing closure
Inventor:
Douglas S. Martin
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Oct 10, 2001
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.