Granted Patent
Utility
US 5,443,480 · App. 08/049,633
Sharply angled kelly (Jacobs) clamp
Inventors:
Moises Jacobs, Charles R. Slater, Kevin W. Smith
Patented Case
View Patent ↗
Granted: Aug 22, 1995
Filed: Apr 19, 1993
Inventors
Moises Jacobs
Charles R. Slater
Kevin W. Smith
Assignee (at issue)
Symbiosis 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.