Granted Patent
Utility
US 4,900,248 · App. 07/300,985
Skid rail
Inventors:
Kazuto Terai, Susumu Isobe, Kenji Tsukuda, Hisao Inoue, Hiroshi Kobayashi
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Jan 24, 1989
Inventors
Kazuto Terai
Susumu Isobe
Kenji Tsukuda
Hisao Inoue
Hiroshi Kobayashi
Assignees (at issue)
Daido Tokushuko Kabushiki Kaisha
INCO Alloys International, 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.