John B. Johnson, P.P. Cioffi and H.W. Weinhart discuss vacuum tube problem.

Abstract/Description:	(L-R): J.B. Johnson, P.P. Cioffi, Laboratory Assistant, now authority on magnetics, and H.W. Weinhart, outstanding glass technologist, discuss vacuum tube problem.
Subject(s):	Equipment and supplies Conversation Johnson, John Bertrand
Date Created:	circa 1920
Credit Line:	Western Electric Co., courtesy AIP Emilio Segrè Visual Archives
Catalog ID:	Johnson John Bertrand F4

Title:	John B. Johnson, P.P. Cioffi and H.W. Weinhart discuss vacuum tube problem.
Type of Resource:	still image
Date Created:	circa 1920
Extent:	1 photographic print (black and white; 6 x 4 inches)
Abstract/Description:	(L-R): J.B. Johnson, P.P. Cioffi, Laboratory Assistant, now authority on magnetics, and H.W. Weinhart, outstanding glass technologist, discuss vacuum tube problem.
Identifier(s):	Johnson John Bertrand F4 (Catalog ID)
Note(s):	Credit Line: Western Electric Co., courtesy AIP Emilio Segrè Visual Archives
Subject(s):	Equipment and supplies Conversation Johnson, John Bertrand
Held by:	Niels Bohr Library & Archives
Copyright Holder:	Western Electric Co.
Restrictions on Access:	NBLA may be able to provide copyright contact information. Please contact us.
Related Title:	Emilio Segrè Visual Archives General Collection. https://libserv.aip.org/ipac20/ipac.jsp?uri=full=3100006~!4022~!0&ri=3&menu=search&source=~!horizon
In Collections:	Emilio Segrè Visual Archives General Collection