Granted Patent
Utility
US 4,272,772 · App. 06/052,453
Priming apparatus for liquid ink writing instruments
Inventor:
Ronald J. Geil
Patented Case
View Patent ↗
Granted: Jun 9, 1981
Filed: Jun 27, 1979
Inventor
Ronald J. Geil
Assignee (at issue)
Gould 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.