Granted Patent
Utility
US 5,251,421 · App. 07/832,788
Prestress wire splicing apparatus
Inventors:
Ralph Friedrich, Ming-Che Kuo, Danny I. Wang
Patented Case
View Patent ↗
Granted: Oct 12, 1993
Filed: Feb 7, 1992
Inventors
Ralph Friedrich
Ming-Che Kuo
Danny I. Wang
Assignee (at issue)
Ameron, 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.