Anyone Bending a sketch and description may quietly ascertain our opininn free whether an invention is probably pat en tab le. Communications strictly confidential. Handbook on Patents sent free. Oldest agency for securing patents. Patents tauen through. Mctnn & CO. receive Special Notice, without charge, in the Scientific American A handsomely illustrated weekly. Largest circulation of any scientific journal. Terms, 3 a year; four months, 1. Sold hy all newsdealers, MUNN & CO.361 Broadway, NEW YORK Branch Office CSMP St. Washington. D. C.
Patents - April 1, 1905
This article was originally published with the title "Patents" in SA Supplements 59, 1526supp, 275 (April 1905)