Concordance :
- Publisher: U.S. Dept. of Commerce, Patent and Trademark Office, Patent Documentation Organizations :
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 32896335
- Subject: Patents United States Classification.
- Subject code: T
- Publication history:
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | 1971; 1974; 1980; 1990; 1995; 2000; 21.14/2:C 74 | permanent |