Granted Patent
Utility
US 6,502,838 · App. 09/530,850
Transport cart for cleaning and collecting recyclable waste
Inventors:
Frank Kresse, Klaus-Peter Bansemir, Heiko Faubel
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Aug 15, 2000
Inventors
Frank Kresse
Klaus-Peter Bansemir
Heiko Faubel
Assignee (at issue)
Ecolab GmbH & Co. OHG
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.