Thanks Martin,
Again very interesting patents !
The VEB Patent reminds me tithe DGL-Pressler N3 and N4
dekatrons. In case you meet some more information about these tubes (never
in commercial production, however the N3 is available on eBay) I should
appreciate a copy too. I have one N3,
that is probably not functioning, but I want to try to get light out of it. The
only I found is a brief datasheet.
Kind regards.,
eric