Wade Bequest collection of valves: Experimental four-electrode radio valve

maker:
Allgemeine Elektricitats-Gesellschaft
and
Marconi Osram Valve Company Limited
SMG00237686

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SMG00237686
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Wade Bequest collection of valves: Experimental four-electrode radio valve. Tubular bulb with two end caps and three side caps. With paper label: W52

Details

Category:
Collection Unassigned
Object Number:
1972-343/62
credit:
Wade, J.C.F.