permission to use and modify the hp41 font

[be-sign.net]

hello MoHPC-forum,
i am currently working on a photoshop workshop to create elements of old hi-fi systems. one lesson deals with displays (LED, LCD, VFD). for that i was looking for a nice monospaced LCD-font and remembered the one on my HP41-calculaters.
there are several versions of this fonts in the forum. the one from malaga only runs under os x, the one from viera does not run on my imac at first. but after a new export with fontlab, it works fine. on the opportunity, i created a new glyph, i need for the workshop.
my questions: how can i contact one of the font-designers and ask them for permission to use the font for my project and modify it if necessary? are there other, newer versions of this very nice font available? can i offer the followers of my workshop a download of a modified font?
i would like to have this officially and correctly regulated and would appreciate the help of the forum.
best regards,
bernd scheurer