Undated used in a sentence

Undated in a sentence as an adjective

" But the authors cited only one nameless, undated study.

Those that pre-order Unity 4 starting today will get access to a beta test for the new engine, ahead of a full release that is still undated.

I saw the FAA discussion but the document was undated and I thought it was upvoted out of it pure interest...I hadn't seen this story until I woke up but didn't really watch the news yesterday.

The undated documents show that federal agents are trained to recreate the investigative trail to effectively cover up where the information originated.

[1] The undated documents show that federal agents are trained to recreate the investigative trail to effectively cover up where the information originated, a practice that some experts say violates a defendant's Constitutional right to a fair trial.

The undated documents show that federal agents are trained to "recreate" the \n investigative trail to effectively cover up where the information \n originated, a practice that some experts say violates a defendant's \n Constitutional right to a fair trial.