Patent #2,256,733 - Electrodes for the Electrical Determination of pH, 1937-1948
File — Box: 52, Folder: 20-21
Dates
- Creation: 1937-1948
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