1
by Keiper, Frank
Published 1924
Pioneer Pub. Co

12
by Terrell, Thomas
Published 1895
Sweet & Maxwell

14
by Godson, Richard
Published 1823
Printed for J. Butterworth and Son

18
by Gordon, John William
Published 1908
Jordan & Sons
Subjects: ...Inventions / Great Britain / Patents...

20
by Spence, William
Published 1847
W. & R. Stevens and G.S. Norton