Improvements in dental engines
By: [William Perry Horton]
Contributors: Jones, Ansel B., inventor; Lake, Henry Harris, patentee; Haseltine, Lake & Co
Publisher: Printed for Her Majesty's Stationery Office by Darling and Son, Ltd
Place of publication: London
Language: eng
Notes: Patent specification.

Contains both the provisional and the complete specification.

Patent reference : 1893/6057.