- TitlePrinted Specification of John Henry Dallmeyer and Harry Carter for photographic camera. No 12820
- Reference198028/1/6
- Date1927
- CreatorJohn Henry (1830 - 1883) optical lens manufacturer Dallmeyer, Harry Arthur director of JH Dallmeyer Ltd Carter
- Scope and ContentTwo copies. With receipt for specification issued by the Patent Office and carbon copy of original typewritten specification
- LanguageEnglish
- Persons keywordHarry Arthur director of JH Dallmeyer Ltd Carter