TY  - BOOK
ED  - House of Representatives <Washington>
TI  - Hearings before the committee on patents: 72. Congress, 1. session on general revision of patent laws …1932
PY  - 1932///
CY  - Washington: 
PB  - U.S. Govern. Print. Off., 
KW  - Patentwesen
KW  - USA
ER  -