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Expired Canadian patentCanada

Video measuring system

CA 1256199 A · Owner: Chesebrough-Pond'S Inc. · Inventors: Westkamper, Michael J.; Duncan, Dana L.; Hall, James R.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A user-friendly video measuring system employing a TV camera having a two-axis array of photosensors a memory, a, monitor, a keyboard and a joystick. The camera takes a first picture, which is stored in memory and displyed on the monitor. In response to a series of menus an operator uses, the joystick to manipulate a cursor on the monitor to locate a series of start search points for the first picture and to, select gradient threshholds for one or more features. Both the start search points and gradient thresholds are stored. The operator also selects and stores tolerances for the measurements. A second picture is taken and examined commencing with the stored start search points to …

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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 20, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 20, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 3, 1985
GrantedJune 20, 1989
Term endedJune 20, 2006
Patent numberCA 1256199 A
Classification (IPC)H04N7/18 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedApril 3, 1985Patent grantedJune 20, 1989Term endedJune 20, 2006

Sources & verification

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