Granted Patent
Utility
US 5,297,472 · App. 07/953,005
Beverage extraction device
Inventors:
Mitsuo Suzuki, Hisashi Karasawa, Michio Seshimo
Patented Case
View Patent ↗
Granted: Mar 29, 1994
Filed: Sep 29, 1992
Inventors
Mitsuo Suzuki
Hisashi Karasawa
Michio Seshimo
Assignee (at issue)
VKI Technologies 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.