- Publication Title:
- Valves and valve actuation; revised by Office of Examining and Classifying Control.
- Display Title:
- Classification definitions. class 251. Valves and valve actuation; revised by Office of Examining and Classifying Control.
- Series Title:
- Classification definitions.
- Corporate Agency Authors:
- Patent Office and Commerce Dept.
- Sort Author:
- Patent Office
- Author place:
- Washington, DC
- Author zip:
- 20231
- Date:
- Revision 1. Nov. 1967
- Publish Date ISO Format:
- 1967-01-01T00:00:00Z
- Publication Start:
- 19670101
- Publication End:
- 19671231
- Corporate/Agency Author:
- Patent Office
- Publication month:
- 13
- Publication year:
- 1967
- SuDoc number:
- C 21.3/2:class(no.)
- Description:
- [55] p. 4°
- Notes:
- [Original classification by C. D. Angel and others.] and [Issued with perforations.]
- Notes:
- [Issued with perforations.] • Sent to Depository Libraries. Item 252
- Availability:
- * For Sale by Superintendent of Documents. Paper, 50c and • Sent to Depository Libraries. Item 252
- GPO Item number:
- 252
- Monthly Catalog date:
- April 1968
- Monthly Catalog issue number:
- 879
- Monthly Catalog page number:
- 1
- Monthly Catalog issue date:
- 1968-04-01T00:00:00Z
- Monthly Catalog entry number:
- 5507
- Record start page number:
- 67