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Patents – Ralston-Purina

 File — Box: 0027

Scope and Contents

Includes: Correspondence Refractory brick for the preheating zones of rotary cement kilns Straw utilization Rice husk fuel gas Gas engine power Articles – about power-gas corporation in England Quaker Oats company information Patent office materials International info: Germany, Canada, Romania, England, India, Philippines

Dates

  • Creation: 1939-1983

Conditions Governing Access

Contact Special Collections for access.

Language of Materials

From the Collection: English

Physical Storage Information

Repository Details

Repository Details

Part of the National Agricultural Library Special Collections Repository

https://www.nal.usda.gov/collections/special-collections
Contact:
National Agricultural Library
10301 Baltimore Avenue
Room 309
Beltsville Maryland 20705 USA
301-504-5876