Granted Patent
Utility
US 5,212,847 · App. 07/823,366
Swab and method of manufacturing and using it
Inventors:
Jerald R. Melcher, Debra A. Speichert
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Jan 21, 1992
Inventors
Jerald R. Melcher
Debra A. Speichert
Assignee (at issue)
Nagl Manufacturing Co.
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.