Life Raft Patent Model. Hervey C. Calkin submitted this life-raft model with his application for a patent in 1790 and 1873, the Patent Office granted 163 patents for an amazing variety of life-preserving boats, rafts, clothing, and other gear.

---

Size: 1940px × 1289px
Photo credit: © SBS Eclectic Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: industry, maritime, work