![]() | electron Tube Data sheets |
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![]() | Gecovalve documents |
(up)date | item | size |
2008-04-26 | 1938 pricelist with tube data. | 568,433 bytes |
2009-11-02 | Short data for Geco tubes. Thanks to Peter den Boer. | 177,775 bytes |
2009-11-02 | Short data for Geco tubes 1939/1940. Thanks to Peter den Boer. | 479,232 bytes |