Published Resources Details Letters Patent
- Guns and vessels for submarine warfare & c.
Patent No. 5,363, 21st December 1880. [A communication from abroad by John Ericsson, of the City and State of New York, United States of America.]
"These improvements relate to guns the muzzles of which are presented through and fitted water tight within openings below the water line in the bows of vessels on which they are used, and also to guns which may be loaded on board of vessels, and afterwards placed on and fired from supports on the exteriors of such vessels."