31 March (Vanuatu ) within release 101 Years Phone goes into circulation Stamp A. G. Bell, Inventor of the telephone face value 70 New Hebrides goldcentime
Stamp A. G. Bell, Inventor of the telephone in catalogues | |
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Michel: | Mi:NHB424 |
Stamp is square format.
Stamp A. G. Bell, Inventor of the telephone 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.