Granted Patent
Utility
US 5,988,917 · App. 09/173,266
Cosmetic stick dispenser
Inventors:
Robert J. Sheffler, Charles Chang
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Oct 15, 1998
Inventors
Robert J. Sheffler
Charles Chang
Assignee (at issue)
Charles Chang
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.