Granted Patent
Utility
US 4,783,013 · App. 07/158,782
Jaw crusher toggle beam locking structure
Inventor:
Henry H. Polzin
Patented Case
View Patent ↗
Granted: Nov 8, 1988
Filed: Feb 22, 1988
Inventor
Henry H. Polzin
Assignee (at issue)
Telsmith, Inc.
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.