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|Material Type:||Government publication, National government publication|
|All Authors / Contributors:||United States. Congress. House. Committee on Patents.|
Printed for the use of the Committee on patents.
Charles Kramer, chairman.
|Description:||2 pt. 23 cm|
|Contents:||[pt. 1] Hearing, Mar. 14, 1940.--pt. 2. Appendix, June 25, 1940.|