Granted Patent
Utility
US 5,386,443 · App. 08/172,821
Self-expanding waterproof cover for crane hook
Inventors:
Bengt I. Baversten, Adrian P. Wivagg
Patented Case
View Patent ↗
Granted: Jan 31, 1995
Filed: Dec 27, 1993
Inventors
Bengt I. Baversten
Adrian P. Wivagg
Assignee (at issue)
Combustion Engineering, 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.