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LAW OF PATENTS

FOR

USEFUL INVENTIONS.

BY

WILLIAM C. ROBINSON, LL.D.,

PROFESSOR OF LAW IN YALE UNIVERSITY.

IN THREE VOLUMES.

VOL. III.

Felix qui potuit rerum cognoscere causas.-VIRG. Georg. ii. 490.

BOSTON:

LITTLE, BROWN, AND COMPANY.

1.37221

APR 26 1951

Copyright, 1890,
BY WILLIAM C. ROBINSON,

UNIVERSITY PRESS:
JOHN WILSON AND SON, CAMBRIDGE.

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tenable.

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