Granted Patent
Utility
US 6,533,974 · App. 09/690,712
Method of forming a profile on a foam rod
Inventors:
Steven Hartman, David Hartman
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Oct 18, 2000
Inventors
Steven Hartman
David Hartman
Assignee (at issue)
Industrial Thermo Polymers Limited
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.