Published Resources Details Letters Patent
- Mine or torpedo
- United States Patent Office, 6366
Specification forming part of Letters Patent No. 1,228,754. Application filed May 11 1916.
"The present invention is an improvement in automobile mines or torpedoes, and the object of the present invention is to provide a device of this character which will remain submerged at a predetermined depth and will automatically travel in a regular zigzag path…"