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Patent laws.



New Title: Patent and trademark laws
Language(s): English
Published: Washington, U. S. Govt. Print. Off.
Subjects: Copyright > Copyright / United States.
Trademarks > Trademarks / United States.
Patent laws and legislation > Patent laws and legislation / United States.
Note: At head of title, 1909-1923: ... United States Patent Office.---1925-1929, Department of Commerce. United States Patent Office.--1931- U.S. Department of Commerce. United States Patent Office.
Physical Description: v. 23 cm.
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