[time-nuts] Counter?

[Bob Camp]

Hi

It depends on just how closely you define the term. Simple answer WWII military 
gear for the principle (all glass etc). For the exact dimensions and pin sizes. Post WWII 
TV sets.

Bob

> On Feb 19, 2016, at 2:44 PM, Hal Murray <hmurray at megapathdsl.net> wrote:
> 
> 
> th.allgeier at gmail.com said:
>> An interesting find, but not as old as advertised: Friesecke & Hoepfner only
>> moved to Erlangen-Bruck after WW2, in or around 1949.  ...
> 
> When were 7 and 9 pin tubes first used?
> 
> 
> 
> 
> -- 
> These are my opinions.  I hate spam.
> 
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.