Letters patent (United States) No 135,036 John Wesley Hackworth, Improvement in Valve Gears for Steam Engines
- PART OF:
- Specifications and patents
- Made:
- 1873-01-21
- part of archive:
- Hackworth Family Archive
- maker:
- Hackworth, John Wesley
Details
- Extent:
-
1 item
- Identifier:
- HACK/3/2/1/13