Hi Jakub
thanks! But hey, I think I know this tube ;-)
http://www.jb-electronics.de/html/elektronik/nixies/n_rd125.htm
Jens
Hello,
sorry for reviving this old topic, I found it by accident when looking
for informations about one nixie.
I think it might help you, in attachment is photo of lab sample nixie
from Ericsson.
Unfortunately, I don't have any more information about it, it is old
photo which i download from ebay...
Jakub
On Tuesday, 11 September 2012 22:02:16 UTC+2, Jens Boos wrote:
Hi folks,
as some of you may know, besides Nixie tube collecting I am also
interested in the history. I am writing an article, and every now and
then I stumble upon something that makes me believe that I will most
likely never finish it ;-)
Here is the confirmed US Nixie tube history: National Union was the
first to sell a readout tube product line (1954), although Northrop
aircraft filed promising patents as early as Nov 1950; however, these
tubes were never manufactured by Northrop (not a single one of these
tubes has been found as of today). National Union was closely
followed
by Burroughs in 1955 who then offered their "Nixie" tube. But
National
Union beat Burroughs by the nose.
Anyway, I was doing some casual research for patents filed by
Ericsson,
and found patent "GB739041", file is attached. The funny thing is,
this
baby was filed May 9, 1950, predating the first Northrop patent
(US2618697) by more than half a year. The word "improvements" in the
patent title suggests that this patent bases on other concepts
already
around at the time, but I cannot find out which patents it refers to.
Any ideas?
The most interesting thing is that Ericsson was probably the first
company that commercialised the idea of a Nixie tube (and thus
thought
it worth to be patent-protected, that is the logic here).
I feel that the European history of the Nixie tube needs further
research. Has anyone been able to piece together the European side of
the story?
To be honest, I don't know if this patent is an entirely new
discovery,
but I could not find it on Randall's page:
http://www.scientificsolutions.ca/patents.htm
Jens
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