Granted Patent
Utility
US 5,379,926 · App. 08/038,909
Dispensing closure with a twist sleeve and two internal passages
Inventors:
Bruce M. Mueller, Richard J. Daniels, John Elliott
Patented Case
View Patent ↗
Granted: Jan 10, 1995
Filed: Mar 26, 1993
Inventors
Bruce M. Mueller
Richard J. Daniels
John Elliott
Assignee (at issue)
AptarGroup, 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.