Engine is an Oleo-mac 40cc
I note that the EMAK Group (Italy) website covers these brands:
Oleo-Mac
Efco
Bertolini
Nibbi
http://www.emakgroup.com/And here is the Italian company that, according to the patent number on it, designed the handle:
http://www.misellisrl.com/en/contactsBoth companies appear to be based in the Province of Reggio Emilia.