’Phone, Main—6995 “Things Rubber”
Washington Rubber Co.
10th & F Sts. Washington, D.C.
Patents
ALEXANDER & DOWELL
Attorneys at Law
918 F Street, Washington, D. C.
(Established 1857)
Procure Patents and Trade-Marks; render Expert Opinions on Patentability of Inventions; Validity and Infringement of Patents. Practice in all Federal Courts. Inquiries courteously and freely answered.