Granted Patent
Utility
US 5,290,294 · App. 07/839,011
Method and apparatus for removal of a foreign body cavity
Inventors:
Brian J. Cox, Jay A. Lenker, Daniel C. Merrill
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Feb 14, 1992
Inventors
Brian J. Cox
Jay A. Lenker
Daniel C. Merrill
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.