No idea about the licence. 

The only ref i've found about is in the [Device::Pertelian](https://metacpan.org/pod/Device::Pertelian#AUTHOR) perl module from cpan

```
DOCUMENTATION
See http://www.ekenrooi.net/lcd/lcd.shtml, http://web.archive.org/web/20100903020330/http://developer.pertelian.com/index.php?option=com_content&view=section&id=3&Itemid=9 and the pertd software that vanished with the main website pertelian.com.

COPYRIGHT & LICENSE
Copyright 2008 Alex Kapranoff, all rights reserved.

This program is released under the following license: GPL version 3

In the included pertd.tgz archive there is code by: Frans Meulenbroeks, Ron Lauzon, Pred S. Bundalo, Chmouel Boudjnah, W. Richard Stevens.

The code in pertd.tgz is either in Public Domain or available for distribution in unmodified form. See the relevant files.
```

It suggests that the code and others infos have vanished and it seems to be at least Public Domain.