| To: | topband@contesting.com> |
|---|---|
| Subject: | Re: Topband: Vacuum tube 100 years old today |
| From: | zl3ix@inet.net.nz |
| Date: | Tue, 16 Nov 2004 23:20:06 GMT |
| List-post: | <mailto:topband@contesting.com> |
Happy Birthday, Tom! > On Nov. 16, 1904 Fleming patented the Fleming valve. The > vacuum tube is 100 years old today (exactly 46 years to the > day older than I am). > _______________________________________________ Topband mailing list Topband@contesting.com http://lists.contesting.com/mailman/listinfo/topband |
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