Stamp: Carl Auer von Welsbach (1858-1929): gas mantle light (Austria 1936)
Carl Auer von Welsbach (1858-1929): gas mantle light (Austria 1936)
06 December (Austria ) within release Inventors goes into circulation Stamp Carl Auer von Welsbach (1858-1929): gas mantle light face value 40+40 Austrian groschen
| Stamp Carl Auer von Welsbach (1858-1929): gas mantle light in catalogues | |
|---|---|
| Michel: | Mi:AT 635 |
| Yvert et Tellier: | Yt:AT 492 |
Stamp is square format.
Also in the issue Inventors:
- Stamp - Joseph Ressel (1793-1857): ship's propeller face value 12+12;
- Stamp - Carl von Ghega (1802-60): Semmeringbahn face value 24+24;
- Stamp - Joseph Werndl (1831-89) weapons technology face value 30+30;
- Stamp - Carl Auer von Welsbach (1858-1929): gas mantle light face value 40+40;
- Stamp - Robert von Lieben (1873-1913): electrons amplifier tube face value 60+60;
- Stamp - Viktor Kaplan (1876-1934) Kaplan turbine face value 64+64;
Stamp Carl Auer von Welsbach (1858-1929): gas mantle light it reflects the thematic directions:
An invention is a unique or novel device, method, composition, idea, or process. An invention may be an improvement upon a machine, product, or process for increasing efficiency or lowering cost. It may also be an entirely new concept. If an idea is unique enough either as a stand-alone invention or as a significant improvement over the work of others, it can be patented. A patent, if granted, gives the inventor a proprietary interest in the patent over a specific period of time, which can be licensed for financial gain.
Technology is the application of conceptual knowledge to achieve practical goals, especially in a reproducible way. The word technology can also mean the products resulting from such efforts,including both tangible tools such as utensils or machines, and intangible ones such as software. Technology plays a critical role in science, engineering, and everyday life.
