Granted Patent
Utility
US 4,128,430 · App. 05/631,512
Master sheets and process for printing same
Inventors:
Douglas A. Newman, Robert T. Emerson
Patented Case
View Patent ↗
Granted: Dec 5, 1978
Filed: Nov 13, 1975
Inventors
Douglas A. Newman
Robert T. Emerson
Assignee (at issue)
Columbia Ribbon & Carbon Mfg. Co., 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.