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Displaying 181 to 200 of 655 records
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| Heading | Date | Maker | Place | Materials | Inv Num | |
|---|---|---|---|---|---|---|
| View Record | Early Coherer No 217 | c. 1899 | Unknown | Unknown | Glass, copper, nickel, silver, assorted metals. | 55585 |
| View Record | Early Coherer | c. 1899 | Unknown | Unknown | Glass, copper, nickel, silver, assorted metals. | 88920 |
| View Record | Early Coherer | c. 1902 | Unknown | Unknown | Glass, copper?, assorted metals. | 53061 |
| View Record | Leclanche Cell | Early 20th Century | General Electric Co. Ltd. | USA | Glass, earthenware?, steel. | 78623 |
| View Record | 1901 Transatlantic Self-Restoring Coherer | c. 1901 | Lieutenant Luigi Solari. | Italy | Glass, ebonite, brass, mercury, iron/carbon. | 96386 |
| View Record | Early Small Coherer | c. 1895 | Guglielmo Marconi. | Italy | Glass, elastic, copper?, assorted metals. | 98899 |
| View Record | Early Coherer | c. 1902 | Unknown | Unknown | Glass, elastic, copper?, steel, assorted metals. | 62930 |
| View Record | Cluster Of Six Small Glass Tubes | c. 1902 | Unknown | Unknown | Glass, elastic, steel, assorted metals. | 80963 |
| View Record | Tungsram Radio Valve Type P43t-38 With Carton | 20th Century | Tungsram. | France | Glass, halogen, steel, ceramic?, copper?, plastic?, assorted metals. | 86475 |
| View Record | Cold Cathode Ray Tube | c. 1902 | Unknown | Unknown | Glass, mahogany, copper, metal. | 25358 |
| View Record | Marconi Radio Valve Type MT1 | c. 1919 | Marconi-Osram Valve Co. Ltd. | London | Glass, nickel, assorted metals. | 48681 |
| View Record | Marconi Radio Valve Type MT1 | Early 20th Century | Marconi-Osram Valve Co. Ltd. | London | Glass, nickel, assorted metals. | 46376 |
| View Record | Marconi-Osram Radio Valve Type R | c. 1923 | Marconi-Osram Valve Co. Ltd. | London | Glass, nickel, plastic?, brass?, assorted metals. | 85569 |
| View Record | Marconi-Osram Radio Valve Type R | c. 1925 | Marconi-Osram Valve Co. Ltd. | London | Glass, nickel, plastic?, brass?, assorted metals. | 82041 |
| View Record | Marconi-Osram Radio Valve Type DER | c. 1923 | Marconi-Osram Valve Co. Ltd. | London | Glass, nickel, plastic?, brass?, assorted metals. | 43964 |
| View Record | Marconi-Osram Radio Valve Type R | c. 1923 | Marconi-Osram Valve Co. Ltd. | London | Glass, nickel, plastic?, brass?, assorted metals. | 59257 |
| View Record | Experimental Fleming Valve | c. 1889 | Prof. J.A. Fleming. | London | Glass, nickel, steel, ebonite, wood. | 85593 |
| View Record | Fleming Valve | c. 1889 | Prof. J.A. Fleming. | England | Glass, nickel, steel, ebonite, wood. | 80572 |
| View Record | Marconi Radio Valve Type R | c. 1916 | Marconi's Wireless Telegraph Co. Ltd. | England | Glass, nickel, steel?, tungsten, assorted metals. | 94475 |
| View Record | Marconi-Osram Radio Valve Type DET 1A | 20th Century | Marconi-Osram Valve Co. Ltd. | London | Glass, nickel-plated, brass, plastic?, assorted metals. | 64933 |