Granted Patent
Utility
US 4,284,877 · App. 05/934,726
Electrically heated hair curler
Inventors:
Yoshinori Abura, Fumiya Ueda, Nobuyuki Morihara, Tomohiro Kami
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Aug 21, 1978
Inventors
Yoshinori Abura
Fumiya Ueda
Nobuyuki Morihara
Tomohiro Kami
Assignee (at issue)
Matsushita Electric Works, Ltd.
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.