[CW] Lightening Bug Patents

[Donald Kemp]

No problem Richard, happy to help.

On Fri, Mar 29, 2024 at 12:40 PM Richard Knoppow <1oldlens1 at ix.netcom.com>
wrote:

>     My 1961 Original is the same. Most of the patents listed on the
> earlier keys would have expired by 1950. My 1961 Original is the same,
> no patent numbers shown. The patent law has changed many times and might
> account for the lack of listing.
>     FWIW, until fairly recently United States patents were active for 17
> years. It has been changed now to 20 years to make it consistent with
> international law. At one time patent dates were listed. At some point,
> I read somewhere 1927, the law was changed to require the actual patent
> number be shown. Patents are issued in batches so when only a date is
> shown it may be difficult to find which patent is meant. I think patent
> numbers _could_ be shown before that date but were not required.
>     I was hoping that a patent showing the Lightening Bug design could
> be found. It seems that either no patent was applied for or that there
> was nothing patentable.
>     Thank  you for following up on this.
>
> On 3/29/2024 8:05 AM, Roland "Ron"Günther wrote:
> > Hello to all,
> >
> > Here is information about the patent number, my Lightning with serial
> > number 169708 is from 1950, there is no patent number to be seen.Please
> > note two pictures in the attachment
> >
> >
> > 73 Ron,es cwfe DL5CL BUG#40
> > ....................
> > www.dl5cl.de
> >
>
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> SKCC 19998
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> =30=



-- 
73,
Don, NN8B
"Meanwhile, with ever increasing power, the telegraph has become not only
the master of commerce, but the tongue of mankind." - James D. Reid, 1886
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