US Patent and Trademark Office is one of the greatest repositories of practical knowledge in history. But along with a great deal of very serious and edifying material, much legally advised and/or required verbiage, and inventor-inspired general-purpose pleonasms, there are some items in their records that are highly amusing. In this series, occasional examples of such patents and patent applications are going to be extracted and put up for their amusement value.
Kids love toys; helping them breathe in medical emergencies also seems like a good idea. But most kids generally don't keep and hold toys in front of their nose and/or mouth all the time. Or do they? Wearing a whole face-enclosing helmet is probably not on many kids' list of favorite activities either. In any case, let's look at these unusual contraptions.
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