Reference index of patents of invention, from March 2, 1617 (14 James I.) to October 1, 1852 (16 Victoriae) [Microform] : pointing out the office in which each enrolled specification of a patent may be consulted, and the books containing notices of specifications, also law proceedings, and other subjects connected with inventions : printed and published by order of the Commissioners of Patents, under the Act of 15 & 16 Victoriae, Cap. 83. Sec. XXXII. / by Bennet Woodcroft