Granted Patent
Utility
US 4,452,202 · App. 06/334,452
Vacuum pressure transducer
Inventor:
Paul M. Meyer
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Dec 24, 1981
Inventor
Paul M. Meyer
Assignee (at issue)
ACF Industries Incorporated
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.