Granted Patent
Utility
US 5,438,744 · App. 08/113,901
Automatic finishing method for airtight and waterproof slide fastener
Inventors:
Yoichi Horikawa, Tsutomu Hakoi
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Aug 31, 1993
Inventors
Yoichi Horikawa
Tsutomu Hakoi
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.