Is my understanding mistaken that the new patent laws in the US don't treat unpublished findings as prior art, as part of first to file, so a notarized undisclosed design doesn't count as a public application or publication of the invention?
You're right, it needs to be published - publicly available - and notarised to confirm the date. I'll correct my post.
Edit: oh, apparently I'm not allowed to correct my post. The more I'm here the more I'm frustrated by how HN is structured and how opaque its rules are.