WHITAKER, Judge.
This is a suit for infringement by defendant of plaintiff's patent No. 2,335,474 on apparatus designed to counteract the flow of blood from the head of the pilot of an airplane, caused by sharp changes in its direction, such as pulling out of a steep dive or a sharp bank.
Defendant says plaintiff's patent is invalid because anticipated by the prior art, and that, if valid, it has not infringed it. Our Trial Commissioner finds it is anticipated...
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