IN RE DANIEL EMIL ERICKSON'S LETTERS PATENT.
(1923) 17 Ll L Rep 69
COURT OF APPEAL.
Before the Master of the Rolls (Sir E. Pollock), Lord Justice Warrington and Lord Justice Sargant.
Patent-Liquid Fuel Burners-Petition for Revocation on around of Invalidity for want of Novelty, Subject-Matter and Utility-Allegations of Anticipation and Prior User-Inventive Step.