Re:Patent US5443036 – Method of exercising a cat
by daveloyall on Friday October 23, 2015 @02:04PM
(#10440249)
I had to re-read that part. They are talking about an ordinary red or green laser pointer. The beam itself is hardly visible compared to the spot on the wall--unless your air contains a lot of dust or smoke or fog.
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Re:Patent US5443036 – Method of exercising a cat
by kazinator on Friday October 23, 2015 @02:18PM
(#10440339)
To anyone with a grade 5 science education, "visible light" means a frequency between IR and UV.
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.