Patent monopoly as affecting the encouragement, improvement, & progress of sciences, arts, and manufactures :
Dircks, Henry, 1806-1873.
Patent monopoly as affecting the encouragement, improvement, & progress of sciences, arts, and manufactures : a letter with accompanying statements and statistics, addressed to the Right Hon. Lord Stanley / by Henry Dircks. - London : E. & F. N. Spon, 1869. - 32p.
Patent laws and legislation--Great Britain.
Patent monopoly as affecting the encouragement, improvement, & progress of sciences, arts, and manufactures : a letter with accompanying statements and statistics, addressed to the Right Hon. Lord Stanley / by Henry Dircks. - London : E. & F. N. Spon, 1869. - 32p.
Patent laws and legislation--Great Britain.