From Michael Garhart in 'Peggy Ann Landon':
I was searching through the oldest USPTO's inventory listing. It's very cumbersome, and i didn't find a patent for Break O'Day. Don't ask me why I considered it an important mission lol. Well, actually, I recall now.

Glenn Dale is a very important rose in breeding. It is a wichurana that has produced much shorter roses, that carry both wichurana resistances and resistances from Rosa moschata that come through many generations of tea and china types. Further, non-genetic resistance of RRD was trialed for Lafter, which is a very close relation, with the same type of foliage, stems, and prickles. So it would be interesting to see the breeding pathway for Break O'Day to see if the unknown portion aided in the eventual equation that became Lafter, or if it was Glenn Dale doing 100% of the heavy lifting.
.........
Michael, I have searched through the Patents and I could not see one for 'Break o Day' 1939.
On the way through I did note the following Brownell roses which had Patents and I am not sure if any of the following might reveal something of interest:
Apricot Glow PP200
Copper Climber PP266
Snowwhite Climber PP207
Golden Comet PP235
Golden Glow PP263
Stargold PP248
Federation PP287
Frederick S. Peck PP419
Lily Pons PP420
Pink Princess PP459
Anne Vanderbilt PP504
Orange Everglow PP505
Break O Day Climbing PP696

Tetraploid?

Wicked looking thorns, I didn't have my camera with me, but with backlighting the new red thorns are something to see. No blooms yet.

June-July: one bloom, it faded and shattered quickly, similar in color to Charlotte Brownell, or Candlelight. I didn't notice much in the way of scent.

Another great rose from the Brownells. Many petaled with a great modern day color. The bush is well mannered and disease resistant. The best thing is it is also cold hardy which is important here in Zone 5b. Highly recommended for all.