Granted Patent
Utility
US 4,997,429 · App. 07/290,790
Enteral bottle cap with vent valve
Inventors:
Scott D. Dickerhoff, Alan B. Ranford, David Rork Swisher, Eugene Schrader, Raymond O. Bodicky, Ronald Crouther
Patented Case
View Patent ↗
Granted: Mar 5, 1991
Filed: Dec 28, 1988
Inventors
Scott D. Dickerhoff
Alan B. Ranford
David Rork Swisher
Eugene Schrader
Raymond O. Bodicky
Ronald Crouther
Assignee (at issue)
Sherwood Medical 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.