The 3720 is still manufactured by Godin in France. It is very similar to the 3730 spec sheet that Franco B posted . If I was told correctly the 3720 was made for the European market and, after the oil shortages/embargoes of the '70s & 80s, Godin developed the 3730 and others for the export market. They are very similar stoves with country specific labeling and regulatory required modifications. Prior to the export models being developed there were several companies that imported the European models to the states.
Information on the stove can be found at this link:http://www.godin.fr/autres-energies/les ... etit-godin
The user manual, in French, can be found here:http://www.godin.fr/notices-siteweb/372 ... 38B-05.pdf
If you cannot read the French use one of the online translators to give you a rough English version. If you have specific questions I may be able to help, leave a post here.
I have been using Godin stoves for about 25 years and have found them to be easy to use, low maintenance stoves.