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Catalogue Number: |
48 |
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Stamp Design: |
Jozef Baláž |
| Graphic Lay-out and Stamp Engraving: |
Martin Činovský |
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Date of Issue: |
December 12, 1994 |
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Printing: |
Postal Stationery Printing House, Prague, Czech Republic |
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Print Technology: |
Rotary-recess printing combined with recess printing |
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Print Run: |
3,450,000 |
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| 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.
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