Patent Yard Sign in
Expired Canadian patentCanada

Method and apparatus for constructing seawalls and docks

CA 1318512 C · Owner: Dow, John M. · Inventors: Dow, John M.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A method and apparatus for making a dock or sea wall whereby the wall comprises at least one sectional dock member, the dock member comprising a concrete base section and a concrete wall section perpendicular to and attached thereto. A forming float device is used to make each sectional dock member while the forming float device floats in a body of water (e.g. sea). Both the base and wall sections of the dock member are formed horizontally on the water, thereby simplifying the means of constructing and positioning the dock members. The forming float device provides a base section forming surface and a wall section forming surface perpendicular thereto. Rotation means are used to rotate the …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted June 1, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 1, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 24, 1989
GrantedJune 1, 1993
Term endedJune 1, 2010
Patent numberCA 1318512 C
Classification (IPC)E02B3/04 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJuly 24, 1989Patent grantedJune 1, 1993Term endedJune 1, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.