Granted Patent
Utility
US 4,406,928 · App. 06/250,461
Multi-purpose telephone holder apparatus
Inventor:
William G. MacKenzie
Patented Case
View Patent ↗
Granted: Sep 27, 1983
Filed: Apr 2, 1981
Inventor
William G. MacKenzie
Assignee (at issue)
International Telephone and Telegraph 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.