My investigation of the three types I've found turned up the following:
Two B1 documents had amended claims. The C1 document had a corrected
front page in which a figure that had nothing to do with the document was
removed from the abstract. The C2 now turns out to be a new listing of
designated states and designated countries for regional patents.
Are there any more of these new beasts out there? Has there been any
announcement of their inception? In short, what's up?
Stu Kaback