ALMOND, Judge.
This is an appeal from a decision of the Board of Appeals rejecting claims 20 through 23 and 25 of appellant's patent application Ser. No. 466,389, filed November 2, 1954.
The application discloses a Venetian blind having vertical slats suspended at their upper ends from runner elements slidable in a horizontal track. Swivel connections are interposed between the upper ends of the slats and the runner elements to permit each slat to turn on...
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