USAINTERNATIONAL STAPLE & MACHINE CO. USAMANUFACTURERS HANOVER CORP. USATHE PERKIN-ELMER CORTORATION USASCHENECTADY CHEMICALS, INC. USAUNISYS CORP. USAWESTINGHOUSE ELECTRIC CORPORATION
**Analysis**
The text appears to be a list of companies, which suggests that it may be related to industry or economy. The companies mentioned are all American and seem to be from various sectors, including manufacturing, technology, and energy.

**Category**
Industry