Granted Patent
Utility
US 4,387,817 · App. 06/312,804
Child resistant container cover
Inventors:
Laurence E. Wiles, Frank C. Page, III, Bruno A. Eibensteiner
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Oct 19, 1981
Inventors
Laurence E. Wiles
Frank C. Page, III
Bruno A. Eibensteiner
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.