Beikoku tokkyo sōsakuin
Subtitle: 1938
By: hensansha Hatsumei Kōhō Kyōkai
Edition: Shohan
Publisher: Hatsumei Kōhō Kyōkai
Published: 1944
Place of publication: Tōkyō
Language: eng
Number of pages: 305
Notes: Based on "Manual of classification of patents, 1929" and "The Official gazette of the U.S. Patent Office."