Granted Patent
Utility
US 5,503,699 · App. 08/423,785
Applying patches from mold cavity surface on ball and impressing patterns
Inventors:
Donald Ratner, Paul Feinsinger, Frank Hsieh
Patented Case
View Patent ↗
Granted: Apr 2, 1996
Filed: Apr 18, 1995
Inventors
Donald Ratner
Paul Feinsinger
Frank Hsieh
Assignee (at issue)
Kransco
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.