In article ,
dt king wrote:

In theory, a patented invention must be "useful", "novel", and
"non-obvious". Most would say that "useful" requires that it actually
work, at least to some extent. It used to be the case, long ago, that
you had to actually build at least a working model and be able to
demonstrate that the device worked.

They say one of the simplest patents ever granted was for the number 1.65.
It was granted to Phillip H. Smith as the optimum diameter ratio for a
coaxial transmission line.

Neat - that's the ratio which gives the lowest loss per weight/cost
of materials given standard (WW II) dielectrics, right?

--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
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