Find thousands of books, manuscripts, visual materials and unpublished archives from our collections, many of them with free online access.
Search for free, downloadable images taken from our library and museum collections, including paintings, illustrations, photos and more.
Improvements in apparatus for the electrotherapeutic treatment of the human body.
- Simpson, Dundas
Public Domain Mark
About this work
[London?] : [Great Seal Patent Office?], 1930.
Redhill : Printed for His Majesty's Stationery Office, by Love & Malcolmson, Ltd., 1930.
2 pages, 1 folded leaf of plates : 3 black and white illustrations ; 28 cm
Title from head of text.
"Dundas Simpson, of 18, Ailsa Road, Westcliff-on-Sea, in the county of Essex."
Patent number at head of title: 326,918.
"Application date: Jan. 12, 1929. No. 1118 / 29. Complete left: July 1, 1929. Complete accepted: March 27, 1930."
Includes provisional and complete specifications.