United States Patents Quarterly [1st]. Cumulative Digest. Vols. 1 to 211, in 19 books (1926-1981), Lacking vol.212-231 in 1 book. Washington, D.C.: Bureau of National Affairs. Ex-library with stamps and location labels at base of spines. Moderate shelf wear with loose bindings. See digital image. Publisher's Price USD 2,550. Special..... More