The principles of pump-work illustrated, : and applied in the construction of a new pump without friction, or loss of time, or water, in working; humbly proposed for the service of the British marine, with the privilege of ... letters patent. /
Martin, Benjamin,1705-1782.
London : printed for the author,
[1766?]
The first page contains a copy of the patent, dated: "the fifth day of July, in the sixth year of [George III's] reign", i.e. 1766.
ESTC
Marine pumps
England London.