Identity area
Reference code
THMG/E/83
Title
2 copies of specification for U.S. patent.
Date(s)
- 1956-1957 (Creation)
Level of description
File
Extent and medium
Context area
Name of creator
Repository
Archival history
Immediate source of acquisition or transfer
Content and structure area
Scope and content
One is annotated '1956. Pencil alterations show changes made for 1957 version'; the other is headed '1957 version'.
Folder also includes copy of declaration re assignment of patent