Catalogue Number: |
48 |
Stamp Design: |
Jozef Baláž |
Graphic Lay-out and Stamp Engraving: |
Martin Činovský |
Date of Issue: |
December 12, 1994 |
Printing: |
Postal Stationery Printing House, Prague, Czech Republic |
Print Technology: |
Rotary-recess printing combined with recess printing |
Print Run: |
3,450,000 |
|
|
FDC Design: |
Jozef Baláž |
FDC Engraving: |
František Horniak |
Cancellation Design: |
Jozef Baláž |
Printing: |
Postal Stationery Printing House, Prague, Czech Republic |
Print Technology: |
Recess printing from flat plates |
FDC Print Run: |
10,000 |
Wolfgang Kempelen
(23. 1. 1734 Bratislava - 26. 3. 1804 Vienna)
- polymath, mechanic, inventor, director of a salt mine in Transylvania, councillor of the Hungarian Transylvanian Office in Vienna. In 1778 Kempelen constructed a speech machine based on imitation of human vocal organs. Of his other inventions the most famous are a chess machine and a writing machine for the blind. He also built a pontoon bridge over the river Danube and constructed a pressurised watercourse to take water from the Danube to Bratislava Castle. In Vienna he designed an irrigation system for the Imperial residence at Schonbrunn.
|