Image / Moorhead S. E. 1444 tube

View source image on contributor's website.

Get Citation

Have a question about this item?

Contact Owner

Item information. View source record on contributor's website.

Title: Moorhead S. E. 1444 tube
Creator: Moorhead, Otis
Date Created and/or Issued: 1919-1920
Contributing Institution: History San Jose Research Library
Collection: History San Jose Online Catalog
Rights Information: Please contact the contributing institution for more information regarding the copyright status of this object.
Description: This Moorhead tube, type S. E. 1444, no. 4022, is nearly identical in appearance to the 1916 Cunningham tube (2003-1-1760), an example of how the tube producers made small adjustments to avoid patent infringement.
Type: image
Identifier: 18ADC210-196A-4815-BBB5-670063501333
2003-1-1754
Subject: Moorhead Laboratories, Inc. (San Francisco, Calif.)
Vacuum-tubes
Nineteen tens
San Francisco (Calif.)
Moorhead, Otis B

About the collections in Calisphere

Learn more about the collections in Calisphere. View our statement on digital primary resources.

Copyright, permissions, and use

If you're wondering about permissions and what you can do with this item, a good starting point is the "rights information" on this page. See our terms of use for more tips.

Share your story

Has Calisphere helped you advance your research, complete a project, or find something meaningful? We'd love to hear about it; please send us a message.