I especially liked this excerpt from the original 1936 patent application:
Applicant has met a problem long existing in the art. A view of any soda fountain on a hot day, with the glasses showing innumerable limp and broken straws drooping over the edges thereof, will immediately show that this problem has long existed.
Where we have the conditions where certainly the straw is old, where corrugated tubing is old, and where no inventor, during those years, has seen fit or has been able to solve this problem, whereas applicant did, that situation alone is prima facie evidence of invention.
