Granted Patent
Utility
US 4,058,121 · App. 05/700,900
Vented needle for medical liquids
Inventors:
Pradip V. Choksi, Donald Leroy Johnston, Walter Seemayer
Patented Case
View Patent ↗
Granted: Nov 15, 1977
Filed: Jun 29, 1976
Inventors
Pradip V. Choksi
Donald Leroy Johnston
Walter Seemayer
Assignee (at issue)
American Hospital Supply Corp.
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.