Stamp: Inventions: Brickmaking (South Africa, Homelands 1992)
Inventions: Brickmaking (South Africa, Homelands 1992)
13 August (South Africa, Homelands ) within release Venda goes into circulation Stamp Inventions: Brickmaking face value 90 South African cent
| Stamp Inventions: Brickmaking in catalogues | |
|---|---|
| Stamp Number: | Sn:ZA-VD 247 |
Stamp is square format.
Also in the issue Venda:
- Stamp - Inventions: Sailing ship face value 1.05;
- Stamp - Inventions: Brickmaking face value 90;
- Stamp - Inventions: Plow face value 35;
- Stamp - Inventions: Wheel face value 70;
Stamp Inventions: Brickmaking 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.
