The so-called Hoerbiger valves. Patent
The so-called Hoerbiger valves. Patent of Hanns Horbiger (1896). About 1930. Photograph
Picture No
10962499
Media ID
46691825
Size
3543px x 1703px
(1.1MB)
Credit
Mary Evans/brandstaetter images
Source
Photograph - Anonymous
Date
1930





























