Granted Patent
Utility
US 4,680,936 · App. 06/813,175
Cryogenic magnet systems
Inventors:
Raymond E. Sarwinski, John R. Purcell, Judson W. Parker, Sibley C. Burnett
Patented Case
View Patent ↗
Granted: Jul 21, 1987
Filed: Dec 24, 1985
Inventors
Raymond E. Sarwinski
John R. Purcell
Judson W. Parker
Sibley C. Burnett
Assignee (at issue)
GA 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.