• 1920: Misak Pens. The ebonite bodied fountain pens were manufactured by Md. Kasim.
  • 1942: Hyderabad Allwyn Limited was established as Allwyn Metal Works, as a joint venture between Industrial Development Trust of the Nizam’s Hyderabad Government and M/s Alladin and Company. It manufactured Pushpak scooters, double decker buses, and refrigerators. The company also made ballot boxes for the 1952 elections. Allwyn Refrigerators and watches held sway in the 1970s and 1980s.
  • 1930-40: The vestiges of the once-flourishing DBR Mills are visible while driving through Lower Tank Bund. The Dewan Bahadur Ramgopal (DBR) mills were among the leading textile manufacturers in Hyderabad.
  • 1938: Numaish Masnuaat-e-Mulki or Numaish was started by a group of graduates of Osmania University to showcase local products. The first Numaish featured 100 stalls and was held at the Public Gardens, before it was shifted to its current location, Exhibition Grounds near Nampally Railway Station.
  • 1967: Electronics Corporation of India Limited (ECIL) was established by A S Rao. ECIL is credited with producing the first indigenous digital computers, TDC 312 and TDC 316 and EC Television sets.