The Law of Patents for Useful Inventions, Volume 1

18 Blatch 20 Blatch 9 Blatch 9 Fed accomplish act or substance apparatus appearance art or instrument Bann Bissell capable claim Clifford co-operative law combination composition of matter concrete invention consists constitute construction contrivance courts device discovered distinct diversity doctrine doctrine of equivalents duced effect elements embodied employed entitled equivalent evidence exercise existing factors Fisher force function granted Holmes idea of means identity improvement infringement ingredients inventive act inventive skill inventor known letters-patent Mach machine manner manufacture material McLean mechanical ment method mode of application mode of operation monopoly nature Neilson object operative means Patent Law patent privilege performed person Phila Phillip Best principle prior produced protection purpose question reduction to practice result Robb rule Sawyer Singer Mfg specific statute substantially substitution thing tion true union utility vention ventor Wall Yale Lock Mfg