09 February (Netherlands ) within release 100 Years of patent goes into circulation Stamp Bicycle chain case, Van der Woerd 1974 face value 44 Euro cent
Stamp Bicycle chain case, Van der Woerd 1974 in catalogues | |
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Michel: | Mi:NL 2731 |
NVPH: | NVP:NL2702 |
Stamp is horizontal format.
Also in the issue 100 Years of patent:
Stamp Bicycle chain case, Van der Woerd 1974 it reflects the thematic directions:
A bicycle, also called a pedal cycle, bike, push-bike or cycle, is a human-powered or motor-assisted, pedal-driven, single-track vehicle, with two wheels attached to a frame, one behind the other. A bicycle rider is called a cyclist, or bicyclist.
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.