Granted Patent
Utility
US 5,205,094 · App. 07/802,201
Silo including a device for preventing obstruction to air flow
Inventor:
Mats Holmqvist
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Dec 4, 1991
Inventor
Mats Holmqvist
Assignee (at issue)
PM Luft AB
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.