Patent #2,232,212 - Apparatus for Analyzing Direct Current Voltages and Currents, 1939-1951
File — Box: 52, Folder: 18-19
Dates
- Creation: 1939-1951
Repository Details
Part of the Science History Institute Archives Repository
Contact:
315 Chestnut Street
Philadelphia PA 19106 United States
215.873.8265
215.873.5265 (Fax)
reference@sciencehistory.org
315 Chestnut Street
Philadelphia PA 19106 United States
215.873.8265
215.873.5265 (Fax)
reference@sciencehistory.org