Granted Patent
Utility
US 5,873,384 · App. 08/765,641
Pressure relief valve for pressure equalization between a closed space and the surrounding atmosphere
Inventors:
Hans-Henrik Raagaard Pedersen, Anders Ib Damborg Petersen
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Dec 30, 1996
Inventors
Hans-Henrik Raagaard Pedersen
Anders Ib Damborg Petersen
Assignee (at issue)
Emil Aarestrup S.o slashed.rensen
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.