Granted Patent
Utility
US 4,515,845 · App. 06/494,783
Pile damper mechanism
Inventor:
Gerald A. Annis
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: May 16, 1983
Inventor
Gerald A. Annis
Assignee (at issue)
Schlegel 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.