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Assignee: Davidson; Frank P.

Location: Concord, MA
No. of patents: 1

Number	Title	Issue Date
5098219	Mobile submersible caisson for underwater oil-well drilling and production A mobile submersible caisson is employed to drill for and recover petroleum products from subsea wells and to deliver the products to shore or to vessels at the well site. The well drilling technique applies to water depths beyond 300 ft. and in areas whe...	03/24/1992