Granted Patent
Utility
US 4,405,168 · App. 06/206,418
Clamping assembly for lifting heavy objects having a bulbous engagement portion
Inventors:
Eldred N. Fritzsche, Edgar F. Josephson, Frank C. Pulcrano
Patented Case
View Patent ↗
Granted: Sep 20, 1983
Filed: Nov 13, 1980
Inventors
Eldred N. Fritzsche
Edgar F. Josephson
Frank C. Pulcrano
Assignee (at issue)
ACF Industries Incorporated
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.