Granted Patent
Utility
US 4,238,549 · App. 05/963,856
Transfer elements
Inventors:
George P. Dapp, Michael A. Scott
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Nov 27, 1978
Inventors
George P. Dapp
Michael A. Scott
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.