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Inventors

Frantisek Josef Havelka, Prague ->
applied for a letters patent for his invention on stoneprints; which has been granted.

Jaroslav Henevkovsky, Prague-Bubenec ->
formulated a new theory of light for artistic purposes: the invention of "relative colours" for transparent oil painting for which he received a Czechoslovakian patent.

Robert Maurer, Vienna ->
patented his discovery to examine pictures by ultra violet rays.

Joseph Felix (Szczesny) Turski, Warsaw ->
In 1914 he discovered the direct amidation of aromatic compounds (German letters patent No. 287.758).

Hermann Suida, Vienna ->
discovered a new acetic acid conservation process known as the "Suida Process".

Slavko Boksan, Belgrade ->
did very important research work relative to the original inventions of Nikola Tesla on the rotative magnetic field and polyphase electric current.

Antonin Fencl, Prague-Podoli ->
staged many English and American plays and invented his own shorthand-system "Simpligrafie".

Francis Hanaman, Zagreb ->
is the inventor of the first tungsten filament incandescence lamp (with Dr. Just in 1906) and was the first to propose nitration of steel (1915).

Victor Panaitescu, Bucharest ->
has 8 licences as inventor and has introduced a new system which was officially recognized as being the best in the world: an electrical system for giving signs, special batteries for shooting, airplane defense and grapeshot operation.

Mihajlo Pupin, New York City ->
At the age of 15 he emigrated to America where he worked in a factory, attending evening school. He is a world-wide famous inventor- his most important inventions are the so-called "Pupin bobbins", which are built into Telephone Distant Lines and wires for certain distances. They are exactly figured out mathematically by Pupin. This invention, for which he obtained letter-patents in 1899, made the distant-telephone possible. The value of the invention lies in the fact that through selfinduction of the bobbins the usable effects of the capacity of telephone lines, through which words are mutilated, are done away with. By the introduction of electro tubes for intensity plants it was possible by distance cables with Pupin bobbins to obtain clear and distinct telephone intercourse at a distance of many thousands of kilometers. There have been erected in Europe during the last ten years in almost every country extended telephone wire nets with Pupin plants representing an immense improvement. His inventions are also of great influence for the development of radiotechnic.

Carl Zipernowsky, Budapest ->
Together with the engineers Max Déri and O.T. Bláthy he invented the world-famous system of transformers enabling the distribution of electrical energy, thus making the Ganz works prosper.