Marky, Bromovsky and Schulz
Märky, Bromovsky & Schulz, or Maerky Bromovský Schulz, of Prague and Hradec Králové.
1888 Made the car and its petrol engine designed by Siegfried Marcus [1]. The car is on display in Vienna Technical Museum. It was built at the M,B&S Adamstahl factory.[2]
1896 supplied two vertical compound steam engines driving generators to Neu-Bydzov Power Station.[3]
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.