Thanks, Han, this is very helpful information! The runouts of your West Coast pressing also shows the catalog number and side indicators raised and close to the labels, which is typical for these Los Angeles pressings.
Br 3889 - West Coast labels added. The record (Laugh Clown...) was advertised on the cover of the Brunswick July 1928 catalog supplement (together with the same title on 3910) (image added), and I assume it was released that month.
The last East Coast label without the patent under the logo that I have seen is 3930. On the West Coast this earlier label type is used much longer. The last issue with the patent in tiny print (under letters 'nsw' of Brunswick) known to me is 4163; from 4164 on the patent line is longer, printed under letters 'unswi'. And still at that time the West Coast pressings do not mention the patent (West Coast labels have the description printed high on the label at 2, and the cat.nr printed with a larger and different font). Maybe the complete remaining stock of pre-patent label blanks was sent to the West Coast.
Based on my observations, the phrase "U.S. PAT. 1,637,544" was added to East Coast labels ca. November 1928. Both of the copies here must be from around that time and probably use up the older label variant without the patent text.
Rust's Complete Entertainment Discography 2d Ed. gives recording dates of March 22, 1928 for Side B and March 29, 1928 for Side A. Based on those dates and information submitted with surrounding numbers, I have filled in the year of release. The month of release could range from April through as late as September, with the stronger probabilities favoring the May-June-July range.