Granted Patent
Utility
US 4,648,947 · App. 06/729,216
Chromium electroplating and bath therefor
Inventors:
John A. Naismith, Malcolm McCormick, David M. Howe, Malcolm A. Pate
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: May 1, 1985
Inventors
John A. Naismith
Malcolm McCormick
David M. Howe
Malcolm A. Pate
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.