Granted Patent
Utility
US 4,977,592 · App. 07/278,391
Dispenser and unlatching mechanism for a hand-held pay station telephone
Inventors:
Edward J. Hollowed, Jerome L. Oldani
Patented Case
View Patent ↗
Granted: Dec 11, 1990
Filed: Feb 27, 1989
Inventors
Edward J. Hollowed
Jerome L. Oldani
Assignee (at issue)
GTE Airfone Incorporated
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.