Granted Patent
Utility
US 5,090,156 · App. 07/671,162
Method for storing bulbs
Inventors:
Waichirou Kawarabayashi, Yumi Ishii, Shigeru Takahashi
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Mar 14, 1991
Inventors
Waichirou Kawarabayashi
Yumi Ishii
Shigeru Takahashi
Assignee (at issue)
Mitsui Petrochemical Industries, 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.