@book{3199,
	author = {Calvert, Robert,},
	title = {The encyclopedia of patent practice and invention management;},
	publisher = {R. E. Krieger Pub. Co.},
	year = {[1974, c1964]},
	address = {Huntington, N.Y.,},
	note = {Reprint of the ed. published by Reinhold, New York.}
}