Granted Patent
Utility
US 4,600,470 · App. 06/723,654
Method for etching small-ratio apertures into a strip of carbon steel
Inventors:
Richard B. Maynard, John J. Moscony, Margaret Saunders
Patented Case
View Patent ↗
Granted: Jul 15, 1986
Filed: Apr 16, 1985
Inventors
Richard B. Maynard
John J. Moscony
Margaret Saunders
Assignee (at issue)
RCA 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.