HEARINGS BEFORE THE COMMITTEE ON PATENTS HOUSE OF REPRESENTATIVES SEVENTY-FOURTH CONGRESS SECOND SESSION 53-579 REVISED COPY FOR USE OF THE COMMITTEE ON PATENTS WASHINGTON, D, C., FEBRUARY 25, 26, 27 UNITED STATES WASHINGTON: 1936 |
HEARINGS BEFORE THE COMMITTEE ON PATENTS HOUSE OF REPRESENTATIVES SEVENTY-FOURTH CONGRESS SECOND SESSION 53-579 REVISED COPY FOR USE OF THE COMMITTEE ON PATENTS WASHINGTON, D, C., FEBRUARY 25, 26, 27 UNITED STATES WASHINGTON: 1936 |