Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Cryogenic Refrigeration System

Published

Author(s)

J. E. Zimmerman
Citation
PATENT 4 143 520

Citation

Zimmerman, J. (1979), Cryogenic Refrigeration System, PATENT 4 143 520 (Accessed June 14, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created March 12, 1979, Updated October 12, 2021