Granted Patent
Utility
US 5,445,342 · App. 08/318,072
Expansible shaft for roll core
Inventors:
William R. Miller, Timothy J. Becker
Patented Case
View Patent ↗
Granted: Aug 29, 1995
Filed: Oct 5, 1994
Inventors
William R. Miller
Timothy J. Becker
Assignee (at issue)
Tidland Corporation
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.