Granted Patent
Utility
US 4,892,097 · App. 07/153,968
Retractable finger lancet
Inventors:
Joseph V. Ranalletta, Rowland W. Kanner
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Feb 9, 1988
Inventors
Joseph V. Ranalletta
Rowland W. Kanner
Assignee (at issue)
RYDER INTERNATIONAL CO., LTD.
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.