Sigma Labs Inc (SASI)

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That's a point, but on the other hand are specific elements of these other companies' technologies referenced?

If Sigma were choosing to be quiet about their involvements with Siemens et al then Siemens making no attribution in a tour/discussion for a journalism piece which includes mention of algorithms and in-process inspection, etc would be easily explained. But Sigma is broadcasting its involvements smartly, I think, for needed marketing and investment community purposes.

Quite hard to see how a simple attribution of the company behind the algorithms and in-process inspection technology would risk any jeopardy to trade secrets.