Langmuir type metal vacuum pump part sectioned, un

Made:
1915-1925 in United States
maker:
Irving Langmuir

Langmuir type metal vacuum pump part sectioned, unsigned, American, 1915-1925

Details

Category:
Vacuum Technology
Object Number:
1927-1029
Materials:
mahogany (wood), metal (unknown), steel (metal) and tin (metal)
credit:
British Thomson-Houston Company Limited