- Publication Title:
- Classification bulletin [44]. Jan. 1-June 30, 1920, containing classification of subjects of invention revised by Classification Division.
- Display Title:
- Classification bulletin [44]. Jan. 1-June 30, 1920, containing classification of subjects of invention revised by Classification Division.
- Corporate Agency Authors:
- Patent Office and Interior Department
- Sort Author:
- Patent Office
- Date:
- 1920
- Publish Date ISO Format:
- 1920-01-01T00:00:00Z
- Publication Start:
- 19200101
- Publication End:
- 19201231
- Corporate/Agency Author:
- Patent Office
- Publication month:
- 13
- Publication year:
- 1920
- Description:
- 113 leaves, large 8°
- Notes:
- * For Sale by Superintendent of Documents. Paper, 30c.
- Availability:
- * For Sale by Superintendent of Documents. Paper, 30c.
- Monthly Catalog date:
- October 1920
- Monthly Catalog issue number:
- 310
- Monthly Catalog page number:
- 1
- Monthly Catalog issue date:
- 1920-10-01T00:00:00Z
- LC Number:
- 8-16238
- Record start page number:
- 144