Granted Patent
Utility
US 5,210,896 · App. 07/967,684
Center shaft dye injection process
Inventors:
Daniel Hertig, Grzegorz Osinski
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: Oct 26, 1992
Inventors
Daniel Hertig
Grzegorz Osinski
Assignee (at issue)
G.A. Braun, 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.