Journal of the Franklin Institute, Հատորներ 309-310 Pergamon Press, 1980 Vols. 1-69 include more or less complete patent reports of the U.S. Patent Office for years 1825-59. Cf. Index to v. 1-120 of the Journal, p. [415]. |
Journal of the Franklin Institute, Հատորներ 309-310Pergamon Press, 1980 Vols. 1-69 include more or less complete patent reports of the U.S. Patent Office for years 1825-59. Cf. Index to v. 1-120 of the Journal, p. [415]. |