Philadelphia Rubber Works Co. v. United States Rubber Reclaiming Works

Citations

• 225 F. 789
• 1915 U.S. Dist. LEXIS 1309

Syllabus

<p>1. Patents <S=>328—'Validity and Infringement—Process fob Devulcanizing Run dub Waste. r</p> <p>Tlie Alarles patent, No. 635,141, for a process for devulcanizing rubber waste, was not anticipated, discloses invention, and describes the process claimed with sufficient definiteness; also held, infringed.</p> <p>2. Patents <&»312—ínfbingement—Evidence.</p> <p>A defendant is not excused from giving testimony to negative infringement of a patented process by reason of its desire to keep its process a business secret, since it can at least show by affirmative proof what steps of the patented process it does not use.</p> <p>[Ed. Note.—Dor other cases, see Patents, Cent Dig. §§ 544-549; Dec. Dig. g=»312.]</p> <p>other eases see same topic & KEY-NUMBER in all Key-Numbered Digests & Indexes</p> <p>3. Patents <§=>175—Construction of Claim—“More or Less.”</p> <p>In a patent claim, describing a process for devulcanizing rubber waste by beating to a temperature' of 344° Fahrenheit, more or less, and for maintaining such temperature for 20 hours, more or less, the words “more or less” mean approximately or nearly such temperature or length of time, leaving a reasonable margin to the discretion or judgment of the one practicing the process.</p> <p>[Ed. Note.—For other cases, see Patents, Cent. Dig. §§ 250, 250%; Dee. Dig. <@=>175.</p> <p>For other definitions, see Words and Phrases, First and Second Series, More or Less.]</p> <p><£^>For other cases see same topic & KEY-NUMBER in all Key-Numbered Digests & Indexes</p>