I remember from school about radio, sound and light waves. It is interesting stuff.
This does look like a ruby laser on the stamp from 1965.
Hi Eric!Thank you very much for the links and information. I really appreciate it.Best Regards
Parent company is Schiess AG:http://www.fschiess.com/en/
SCHIESS AMERICA CORPORATION WAS A DOMESTIC BUSINESS CORPORATION COMPANY REGISTERED IN UNITED STATES IN 1952, INACTIVE DISSOLUTION IN 1995...