Granted Patent
Utility
US 4,453,568 · App. 06/390,204
Gas control system
Inventor:
Carlos R. Canalizo
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Jun 21, 1982
Inventor
Carlos R. Canalizo
Assignee (at issue)
Otis Engineering Corporation
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.