improved Means for Lighting Theatrical Stages and other Area, Harald Dohrn (Q22952)
From CanonBase
No description defined
Language | Label | Description | Also known as |
---|---|---|---|
English | improved Means for Lighting Theatrical Stages and other Area, Harald Dohrn | No description defined |
Statements
30 December 1915Gregorian
0 references
This patent is filed at the UK patent office and is mainly a combination of the patents filed earlier by Von Salzmann in Germany. Additionally the concept of the stairs is added. (English)
0 references