1. Patents <@=>28 — Design patent must disclose invention.

It requires exercise of the inventive faculty in a design, as in a utility patent, to insure validity, and the test of invention is the same.

2. Patents <@=>71 — Rule as to anticipation applies to design patents.

The rule of law respecting anticipation in utility patents must apply as well to design patents and with like effect.

3. Patents <@=>28 — '¿Esthetic effect is test of validity of design patent.

A design which is the subject of patent appeals to the eye, and the test is the aesthetic effect to the ordinary observer.

4. Patents <@=>328 — 61,043, for design for electric heater, held not infringed.

The Brown design patent, No. 51,043, for design for electric heater, field not infringed.

5. Patents <@=>328 — 51,253, for design for electric heater, held void for anticipation and lack of originality.

The Brown design patent, No. 51,253, for design for electric heater, field void for anticipation and lack of invention.

6. Patents <@=>35 — Extensive use determinative of invention only in doubtful cases.

Extensive use of a patented article is sufficient to turn the scale in favor of invention only in doubtful cases.

7. Courts <@=>354 — Decree entered pursuant to order of trial judge, but signed by succeeding judge, held valid.

Where a District Judge, sitting in another district by designation, heard and determined a cause and ordered that a decree be signed, filed, and entered accordingly, a decree conforming to such order, signed and entered after the term of his designation expired by the succeeding judge, held in effect a nunc pro tune decree and valid.