Granted Patent
Utility
US 4,246,842 · App. 06/063,877
Printing roller
Inventors:
Leland E. Williams, James O. Griffith
Patented Case
View Patent ↗
Granted: Jan 27, 1981
Filed: Aug 3, 1979
Inventors
Leland E. Williams
James O. Griffith
Assignee (at issue)
DayCo Holdings, LP
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.