Granted Patent
Utility
US 5,518,330 · App. 08/280,872
Four part ball point pen mechanism
Inventors:
Guy A. Gervais, Mitchell E. Seamans
Patented Case
View Patent ↗
Granted: May 21, 1996
Filed: Jul 26, 1994
Inventors
Guy A. Gervais
Mitchell E. Seamans
Assignee (at issue)
A.T. CROSS COMPANY, LLC
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.