Granted Patent
Utility
US 4,501,547 · App. 06/482,492
Apparatus for shaping coiled slide fastener coupling elements
Inventors:
Hisayoshi Mizuhara, Shigenori Omori, Akira Tanaka
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Apr 6, 1983
Inventors
Hisayoshi Mizuhara
Shigenori Omori
Akira Tanaka
Assignee (at issue)
Yoshida Kogyo K.K.
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.