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Patent Office files. Washington, D.C., Feb. 29. Employees in the patent office file room. Approximately 2,180,00 patents are kept on file for public use, 2-29-40

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Patent Office files. Washington, D.C., Feb. 29. Employees in the patent office file room. Approximately 2,180,00 patents are kept on file for public use, 2-29-40

description

Summary

Public domain historical photo, free to use, no copyright restrictions image - Picryl description

date_range

Date

1940
person

Contributors

Harris & Ewing, photographer
place

Location

National Museum of American Art38.89789, -77.02275
Google Map of 38.89789, -77.02275
create

Source

Library of Congress
copyright

Copyright info

No known restrictions on publication.

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