[TowerTalk] News from Bencher

[Joe Reisert]

Ed,

Gary Breed, K9AY, did indeed receive a patent a few years back for his 
multi frequency dipole. As I recall, his patent claim mainly was the 
ability to calculate the lengths of the different closely coupled 
resonators rather than just the old cut and try method..

Roger Cox, WD0DGF of Hygain does hold a patent on the open feed system used 
on the Explorer 14 (I think that is the model)? It was about 1980 or so.

I know I did some multi frequency driven Yagis (30/17/12 meters) back about 
1990 using the same concept. The late Lester Cushman, Bill Orr and myself 
discussed it then.

The feed forward concept was done back in the 1960's by W4KFC with his much 
duplicated 10/15 meter dual band Yagi. I had one myself for several years.

Also, if you can prove prior knowledge such as having done what is patented 
prior to the patent application, the patent has no bearing on you although 
you may have to prove it in court with documented evidence.

One final thing to note. If you are applying for a patent, you must apply 
to the US Patent Office within 365 days after you sell a product (such as 
an antenna). I got caught on this one myself when I applied just over 365 
days after shipping an antenna.

73,

Joe, W1JR



At 08:32 PM 7/7/00 -0400, Edward L Bruns wrote:

>Gary Breed, K9AY, had a 'patent pending' on 'closely coupled resonators'
>according to his article in RF Design, November, 1994. His wire antenna
>covered 10, 18, and 24 meg.  Wonder if it was ever issued?
>
>Ed, W3EKT.
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