Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 142,485 pages of information and 227,936 images on early companies, their products and the people who designed and built them.
Märky, Bromovsky & Schulz, or Maerky Bromovský Schulz, of Prague and Hradec Králové.
1896 supplied two vertical compound steam engines driving generators to Neu-Bydzov Power Station.
A c.1908 single cylinder horizontal steam engine, with refrigeration compressor, on display at Vienna Technical Museum has a nameplate proclaiming Prager Maschinenbau AG vorm. (formerly) Ruston & Co, Bromovsky, Schulz & Sohr. Sohr was Richard Sohr.
Prager Maschinenbau was also known at one time as Prager Maschinenbau Aktien-Gesellschaft (vormals Ruston, Bromovský u. Ringhoffer), Prag.
Photos of a surviving stationary steam engine at Jindřichova Hradce here.