Patent Yard Sign in
Expired Canadian patentCanada

Semi-automatic water table

CA 1089757 A · Owner: Anderson Engineers, Inc. · Inventors: Helsel, Kenneth E.; Heasley, Raymond E.; Anderson, Harry E.

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 water table suitable for use with a burning machine includes a water-holding tank, means for changing the water level in the tank and means for collecting swarf or waste material from the burning operation. A burning table is provided by one or more frames carrying burning bars, positioned in the tank above the water level changing means. The waste collection means may also be positioned in the tank below the frames.

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 November 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 28, 1977
GrantedNovember 18, 1980
Term endedNovember 18, 1997
Patent numberCA 1089757 A
Classification (IPC)B23K7/10 +1 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedOct 28, 1977Patent grantedNov 18, 1980Term endedNov 18, 1997

Sources & verification

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