Granted Patent
Utility
US 4,511,315 · App. 06/479,077
Liquid metal mechanical pump
Inventor:
Mitsuru Kanbe
Patented Case
View Patent ↗
Granted: Apr 16, 1985
Filed: Mar 25, 1983
Inventor
Mitsuru Kanbe
Assignee (at issue)
Doryokuro Kakunenryo Kaihatsu Jigyodan
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.