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Tigh Railway Speeds. By W. Barnet LeVan...
in the Establishment of Mr. Fremery, at Eupen. By Chief Engineer Isherwood, V, S. Navy
The Paddling Process, Past and Present. By Percival Roberts, Jr.....
Principal Office, 119 South Fourth Street, Philadelphia
, Washington, D.C. Authors of “The American Patent System," "Our Country's Debt to Patents," "Answers to Questions of the State Department Relating to Patents." Also,
of a “Brief Treatise on Patents," published by Porter & Coates.
Jan. 80 1 yr.
c'xaminations in regard to the validity and Infriagement of Patents.
Rejected Cases a Specialty,
offices, 901 Walnut St.,
Doc., "79 kr