- Publication Title:
- Classification bulletin 81, July 1-Dec. 31, 1941, containing classification of subjects of invention revised by Classification Division.
- Display Title:
- Classification bulletin 81, July 1-Dec. 31, 1941, containing classification of subjects of invention revised by Classification Division.
- Corporate Agency Authors:
- Patent Office and Commerce Department
- Sort Author:
- Patent Office
- Date:
- [1942.]
- Publish Date ISO Format:
- 1942-01-01T00:00:00Z
- Publication Start:
- 19420101
- Publication End:
- 19421231
- Corporate/Agency Author:
- Patent Office
- Publication month:
- 13
- Publication year:
- 1942
- SuDoc number:
- C 21.3:81
- Description:
- 38 leaves, large 8°
- Notes:
- * For Sale by Superintendent of Documents. Paper, 10c.
- Availability:
- * For Sale by Superintendent of Documents. Paper, 10c.
- Monthly Catalog date:
- May 1942
- Monthly Catalog issue number:
- 568
- Monthly Catalog page number:
- 1
- Monthly Catalog issue date:
- 1942-05-01T00:00:00Z
- LC Number:
- L. C. card 8-16238
- Record start page number:
- 481