Remove 4 letters from this seq...Remove 4 letters from this sequence (PRASCTBBICEH) to reveal a familiar English word.
Correct answers: 61
The first user who solved this task is On On Lunarbasil.
Laser patentIn 1967, a U.S. patent for "Ruby Laser Systems" was issued to Theodore Maiman (No. 3,353,115), for which he had applied on 13 Apr 1961. He had first operated a laser based on a ruby crystal on 16 May 1960, at Hughes Research Laboratories in Malibu, California.