Granted Patent
Utility
US 4,448,396 · App. 06/352,082
Heave motion compensation apparatus
Inventor:
Pierre C. Delago
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Feb 25, 1982
Inventor
Pierre C. Delago
Assignee (at issue)
American Hoist and Derrick Company
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.