[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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