Granted Patent
Utility
US 4,492,245 · App. 06/416,738
Nozzle and flapper with squeeze film damping
Inventor:
John Sjolund
Patented Case
View Patent ↗
Granted: Jan 8, 1985
Filed: Sep 18, 1982
Inventor
John Sjolund
Assignee (at issue)
Sundstrand 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.