THE LAW OF PATENTS FOR USEFUL INVENTIONS. BY WILLIAM C. ROBINSON, LL.D., PROFESSOR OF LAW IN YALE UNIVERSITY. IN THREE VOLUMES. VOL. II. Felix qui potuit rezum cognoscere cansas.-VIRG. Georg. i. 490. BOSTON: LITTLE, BROWN, AND COMPANY. {37220 APR 26 1951 Copyright, 1890, UNIVERSITY PRESS: TABLE OF CONTENTS. § 415. The Patent Privilege Created and Defined by the Grant of Letters- 416. Patent Office Established to Secure the Issue of Legal and Correct 417. Authority of Patent Office to Amend Defective Letters-Patent 418. Illegal Letters-Patent Repealed not by Patent Office but by Courts 419. Letters Patent Interpreted by the Courts . § 422. Grant of Letters-Patent Governed by Statute and by Rules of Patent Office: Authority of such Rules 423. Grant of Letters-Patent Illegal unless Statutory Prerequisites |