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Gordon Macdonald
William Purches
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5913. Macdonald, G., and Purches, W. March 12. Drawings to Specification. Buoys. - A detachable and buoyant conning- tower or like structure, which can be released from a stranded submarine vessel, is adapted for use in rescuing the crew or as a mark of the position of the vessel.
GB190605913D1906-03-121906-03-12Improvements in or connected with Conning Towers or like Deck Structures of Submarine Navigable Boats or Vessels.
ExpiredGB190605913A
(en)