I don't mean to seem argumentative, especially as I'm no expert on the
subject, but I've seen examples of barrel organs labeled as
"Harmonipan" and in at least one case "Harmoni-Pan," all with several
different manufacturers' names attached, such as Frati among others.

Examples:

    http://www.ant-mech-music.ch/showroom/2/9/Frati-Berlin-Harmonipan.html
    http://www.geocities.com/Vienna/2831/Gsm6.gif
    http://www.flickr.com/photos/johndmcdonald/1234334904/in/set-72157601661518397/
    http://www.acpilmer.com/enlargedharmonipan.html

These all come from the first page of a Google image search for
"Harmonipan."  They all seem to follow the same general design, the
most notable aspect being the row of piccolos in the face of the organ.

Ben Willis