[Boatanchors] Allen D. Cardwell Receiver

Bruce bsugarberg at core.com
Thu Jan 6 21:26:38 EST 2011


Hello Jim,

Check out the history of Cardwell:

http://www.cardwellcondenser.com/PAGES/history.html

73, Bruce WA8TNC
=================
Jim Haynes wrote:
> There was an Allen D. Cardwell - the same guy? - who was involved in
> printing telegraphy at an earlier time, before the variable condenser
> business.  I see some patents
>
> 1,626,391	1927	Variable air condenser
> 1,194,357	1916	Telegraph transmitter
> 1,070,407	1913	Telegraph type-writer
>
> then shortly before there was a George A. Cardwell, also of New York City
>
>    987,956	1911	Telegraphic transmitter
>    801,967	1905	Multiplex system of telegraphy
>    795,577	1905	Printing telegraphy
>    760,611	1904	Printing telegraph receiver
>    673,315	1901	Printing telegraph


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