Granted Patent
Utility
US 4,982,579 · App. 07/499,841
Evaporator
Inventors:
Katsuhisa Suzuki, Hiroshi Matsubayashi
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Mar 27, 1990
Inventors
Katsuhisa Suzuki
Hiroshi Matsubayashi
Assignee (at issue)
Showa Aluminum Corp.
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.