Mandell, Irving,
How to protect and patent your invention; patent law./ Irving Mandell. - New York, Oceana Publications [1952, c1951] - 80 p. 19 cm.
51014019
Patent laws and legislation--Popular works.--United States
KF3114.6 / .M3
608/MAH
How to protect and patent your invention; patent law./ Irving Mandell. - New York, Oceana Publications [1952, c1951] - 80 p. 19 cm.
51014019
Patent laws and legislation--Popular works.--United States
KF3114.6 / .M3
608/MAH