Granted Patent
Utility
US 5,687,639 · App. 08/483,901
Rotating variable height clamping device
Inventors:
Norman A. Planck, Jr., Eduard Hendrikus Johannes Damhuis, Sherman Howell Creed
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Jun 7, 1995
Inventors
Norman A. Planck, Jr.
Eduard Hendrikus Johannes Damhuis
Sherman Howell Creed
Assignee (at issue)
FMC 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.