Granted Patent
Utility
US 4,377,930 · App. 06/276,553
Infinite reel height adjustment
Inventors:
Lawrence M. Halls, Earl E. Koch
Patented Case
View Patent ↗
Granted: Mar 29, 1983
Filed: Jun 23, 1981
Inventors
Lawrence M. Halls
Earl E. Koch
Assignee (at issue)
Sperry 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.