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Marconi spark coil & gap

  • Colnect-3169-011-Marconi-s-Spark-Coil-and-Spark-Gap.jpg
Short desc: Marconi spark coil & gap


Things in this design:
manufacture Marconi spark coil & gap

This design is used by 1 stamp:
United States 7/10/1973 6c issue=Progress in Electronics dt=electronics progress perf=11






Record of changes


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