BROWN v. SPERRY GYROSCOPE COMPANY, LTD.
(1925) 23 Ll L Rep 84
COURT OF APPEAL.
Before the Master of the Rolls (Sir Edward Pollock), Lord Justice Warrington and Lord Justice Sargant.
Patent - Infringement - Gyroscopic compass -Defence of non-infringement and of invalidity for want of novelty, subject-matter and utility.