Granted Patent
Utility
US 4,287,697 · App. 06/096,310
Wall panel attachment apparatus
Inventors:
Isamu Matsubara, Moriyoshi Hayashi
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Nov 21, 1979
Inventors
Isamu Matsubara
Moriyoshi Hayashi
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.