Granted Patent
Utility
US 6,322,290 · App. 09/490,344
Cable bolt head
Inventors:
Frank Calandra, Jr., Eugene H. Stewart, Stanley Ponce, John G. Oldsen, John C. Stankus, Brian R. Castle
Patented Case
View Patent ↗
Granted: Nov 27, 2001
Filed: Jan 24, 2000
Inventors
Frank Calandra, Jr.
Eugene H. Stewart
Stanley Ponce
John G. Oldsen
John C. Stankus
Brian R. Castle
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.