TY  - BOOK
ED  - United States Senate <Washington>
TI  - Hearing before the Subcommittee on patents, trademarks and copyrights of the committee on the Judiciary: American Patent System ; 84. Congress, 1. session ; pursuant to S.res.92 …
PY  - 1956///
CY  - Washington: 
PB  - U.S. Govern. Print. Off., 
KW  - Patentwesen
KW  - USA
ER  -