Granted Patent
Utility
US 5,637,837 · App. 08/228,034
Platform lifting and lowering mechanism for weighing apparatus
Inventors:
Ralph C. Merz, Thomas Haack
Patented Case
View Patent ↗
Granted: Jun 10, 1997
Filed: Apr 15, 1994
Inventors
Ralph C. Merz
Thomas Haack
Assignee (at issue)
Mettler-Toledo GmbH
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.