Granted Patent
Utility
US 4,543,549 · App. 06/576,848
Multiple channel rotary joint
Inventors:
Leonard A. Meltzer, Seymour Sutkin
Patented Case
View Patent ↗
Granted: Sep 24, 1985
Filed: Feb 3, 1984
Inventors
Leonard A. Meltzer
Seymour Sutkin
Assignee (at issue)
UNITED TECHNOLOGIES CORPORATION
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.