I'm using the name on one of my favorite French instrument websites, http://luthiervents.blogspot.com. The name I'm using is a shortened form of what's engraved on the bell:
Standard Dolnet oval stamp with "DLP"
Anc. Mon. Dolnet Lefevre & Pigis
Henri Dolnet Sr.
Breveté S.G.D.G.
Paris
(Serial number)