Ivan Paspa i sinovi (1. Hrvatska tvornica za elektroindustriju)
Zagreb

Based on his extensive experience in the field of electrical installation and lighting, maintenance of electric motors and telephones, as well as the production of electroplating articles and batteries, Ivan Paspa founded the 1. Hrvatska tvornica za elektroindustriju (1st Croatian Electrical Industry Factory) in 1918. Two years later, by expanding the business and introducing the sons Ivan junior, Josip and Rudolf into the business, Paspa senior transformed the company into a joint stock company under the name 1. Hrvatska tvornica za elektroindustriju Ivan Paspa i sinovi (1st Croatian Electric Industry Factory Ivan Paspa & Sons). The company has been successful in producing batteries and parts for electric motors and generators, providing telephone and electrical installation services, repair of electric motors and dynamo machines.

In 1927, the production of detector crystal radios was commissioned by the newly established Zagreb radio station. In 1926 Radio Zagreb began broadcasting the program as the first radio station in the territory of the Kingdom of Serbs, Croats and Slovenes of the time. Due to the desire to increase the number of subscribers, the management of the radio station has commissioned thousands of radio detector receivers from Paspa. Each new Radio Zagreb subscriber was given a free kit - a receiver with a crystal detector and headset.

Paspa & Sons company extends its product range to pocket lamps, dry cells, batteries of various sizes, which is why the new factory building was built in 1928. In the same year, Ivan Paspa senior retired from the business of the company, leaving his son Joseph and son-in-law Anthony Leitner as managers.

Grand Prix diplomas from international exhibitions in Brussels in 1935 and in Paris in 1936 testify to the quality of the company's products. The average annual production of batteries reached in 1939 the figure of one and a half million pocket and anode batteries and 210,000 pocket lamps. Exports also increased, especially to Hungary, Greece and Bulgaria.

In March 1937, Ivan Paspa Jr. separates from the brothers and the company must re-register. In 1940 it was registered as „Croatia“ -  tvornica baterija i galvanskih elemenata Josip Paspa  ("Croatia"- the factory of batteries and galvanic elements Josip Paspa).

During World War II the company worked mainly for the German army. After the war, it was nationalized and continued its successful production and export until the 2006 when it finally ceased operations.