https://www.plasmaetch.com/
Plasma Cleaning and Etchers | Plasma Clean | Plasma Etch, Inc.
Manufacturer of plasma equipment for cleaning, etching, and surface treatment. Plasma clean surfaces to the atomic level with advanced plasma technology.
plasma cleaningetchersinc
https://digital.library.yale.edu/catalog/10713062
The hungry mob of scriblers and etchers [graphic] - Yale University Library
Mackenzie, Alexander, active 1762, printmaker; [1762]
yale universityhungrymob