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Bound volume of 12 patents

1827-1856
[Letters patent, 1937-1954, of various countries granted to Bernard Sterner and his assignees, Code Designs Ltd., for cylindrical lock and key design. 27 packets]

Letters patent, 1937-1954

1937-1954
[Patent specifications, 1910-1917, of William Aitken re telephone systems. Comprise one German and four U.S. patents, with four loose leaves of patent drawings. 1 file. See also inv. no. 1993-386 (MS 376)]

Patent specifications of William Aitken re telephone systems

1910-1917
[Letters patent, 1898-1899, of various countries granted to Ferdinand Fritz and The Daylight Incandescent Mantle Co, re burners for gas lighting by incandescence. 1 box]

Letters patent, 1898-1899

1898-1899
Ford's patent, 1874, rotary gas-engine, 0.3 h.p.

Ford's patent, 1874, rotary gas-engine, 0.3 h.p.