Granted Patent
Utility
US 5,318,544 · App. 07/964,045
Metering syringe
Inventors:
John Drypen, Charles E. Steele
Patented Case
View Patent ↗
Granted: Jun 7, 1994
Filed: Oct 20, 1992
Inventors
John Drypen
Charles E. Steele
Assignee (at issue)
Kerr Manufacturing 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.