Granted Patent
Utility
US 5,244,314 · App. 07/722,125
Expansion assembly
Inventors:
Frank Calandra, Jr., Jerry E. Frease, John C. Stankus
Patented Case
View Patent ↗
Granted: Sep 14, 1993
Filed: Jun 27, 1991
Inventors
Frank Calandra, Jr.
Jerry E. Frease
John C. Stankus
Assignee (at issue)
Jennmar 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.