Granted Patent
Utility
US 6,694,867 · App. 10/403,724
Scraper device and scraper system
Inventor:
Eldon Roth
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Mar 31, 2003
Inventor
Eldon Roth
Assignee (at issue)
Freezing Machines, 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.