209 F. 614 | 8th Cir. | 1913
As to the second defense, the denial of infringement, that, so far as this record discloses, is devoid of merit. The stem and spring in defendant’s structure is an obvious mechanical equivalent of the same parts of the patent in suit.
There is also abundant evidence to support the contention that defendant acquired no intervening rights between the time of plaintiff’s original patent and its present reissue.
The decree of the trial court is therefore affirmed.