Granted Patent
Utility
US 4,385,224 · App. 06/249,731
Internal heated differential temperature roll
Inventors:
William C. Kaufman, David R. Roland
Patented Case
View Patent ↗
Granted: May 24, 1983
Filed: Mar 31, 1981
Inventors
William C. Kaufman
David R. Roland
Assignee (at issue)
Kimberly-Clark 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.