Granted Patent
Utility
US 5,035,341 · App. 07/606,869
Closure cap having tamper indicating means
Inventors:
Robert J. Heilman, H. Darrell Iler
Patented Case
View Patent ↗
Granted: Jul 30, 1991
Filed: Oct 31, 1990
Inventors
Robert J. Heilman
H. Darrell Iler
Assignee (at issue)
Continental White Cap, 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.