Granted Patent
Utility
US 4,494,652 · App. 06/510,050
Container for sharps
Inventors:
Ralph E. Nelson, Ann L. Nelson, Evelyn J. Bogner, Paul Bogner
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Jul 1, 1983
Inventors
Ralph E. Nelson
Ann L. Nelson
Evelyn J. Bogner
Paul Bogner
Assignee (at issue)
Winfield Industries
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.