Rumford fireplaces, Rumford-style fireplaces and fireplaces with some Rumford features have been around for more than 200 years. There are masons who's great grandfathers built Rumfords in the 19th century.
Rumford fireplaces are really the starting point for all fireplaces since 1796. All modern fireplaces are derived from or relate to or are compared with Rumford fireplaces in some way.
Rumford Fig. 14, 1796
Of course we think we got it right and do it best but we like the fact that "Rumford" is not proprietary and that many masons build Rumfords - and some also get it right.