Talk:Bath interferometer (common path)
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Provenance of drawing of Bath's preferred version of bath[edit]
I wanted to use the figures from the original patent which is allowed for patents of most countries but wikipedia does not allow this for German patents. Karll-Ludwig's drawing (or slight variation) also appeared in other publications in 1973 and 1974 but those are of course copyrighted as well.
So I managed to contact Karl-Ludwig himself (he's still alive) and he agreed to recreate some of the drawings (or similar) from scratch and post them himself on wikimedia commons. He made the drawing this year (2022). He posted a few other drawings as well. Gr5555 (talk) 14:10, 15 July 2022 (UTC)