Granted Patent
Utility
US 4,383,623 · App. 06/244,672
Dispensing closure with stationary axial plug
Inventor:
Frank C. Page, III
Patented Case
View Patent ↗
Granted: May 17, 1983
Filed: Mar 17, 1981
Inventor
Frank C. Page, III
Assignee (at issue)
Ethyl Products Company
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.