Granted Patent
Utility
US 4,734,875 · App. 06/690,213
Log mixer circuit
Inventors:
Judit K. Florence, Roy W. Latham
Patented Case
View Patent ↗
Granted: Mar 29, 1988
Filed: Jan 9, 1985
Inventors
Judit K. Florence
Roy W. Latham
Assignee (at issue)
The Singer Company Limited
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.