Granted Patent
Utility
US 5,506,015 · App. 08/178,953
Tamper-evident closure seal
Inventors:
Fred Frederiksen, Oscar Salinas
Patented Case
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Granted: Apr 9, 1996
Filed: Jan 7, 1994
Inventors
Fred Frederiksen
Oscar Salinas
Assignee (at issue)
Sherwood Medical 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.