The Law Reports (Appeal Cases)
4 App Cas 174
[PRIVY COUNCIL.]
In re
HUGHES' PATENT.
1879 Jan. 29,
30.
SIR BARNES PEACOCK, SIR MONTAGUE E. SMITH, and SIR ROBERT P. COLLIER.
Patent
— Non-user of Invention
— Presumption of Inutility rebutted
— Public Policy
— Condition of Prolongation.