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A comment on Patent US5443036 – Method of exercising a cat. Parent comment
No beam of any type of light is visible in vacuum; it is superfluous to call it invisible in that sense because there is no contrasting opposite.
Patent office staff should have a decent background in science.
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No beam of any type of light is visible in vacuum; it is superfluous to call it invisible in that sense because there is no contrasting opposite.
Patent office staff should have a decent background in science.