Granted Patent
Utility
US 4,332,255 · App. 06/190,018
Shunt valve
Inventors:
Salomon Hakim, Carlos A. Hakim
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Sep 23, 1980
Inventors
Salomon Hakim
Carlos A. Hakim
Assignee (at issue)
Hakim Company Limited
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.