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Expired Canadian patentCanada

Course-correction system for course-correctable objects

CA 1330585 C · Owner: Zwart, Hendrik Jan · Inventors: Wolff, Hendrikus Johannes Gerhardus; Haverdings, Hendrik; Zwart, Hendrik Jan

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

The invention relates to a course-correction system provided with a transmitting and control device 1 for wireless correction of the course of a launched object provided with a receiving device 2 by transmitting a course-correction signal containing course-correction information Cq and identification codes Iq for individual or collective correction of objects arranged into fixed or variable groups. The receiving device 2 of each object is thereto provided with identification parameter Pk for selecting an identification code Iq=m from the course correction signal for which Iq=m = Pk. A fixed group is obtained by identical identification parameters Pk for the objects within the group, while …

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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.

Why it's free to use

  • Granted July 5, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2011.
  • 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 28, 1989
GrantedJuly 5, 1994
Term endedJuly 5, 2011
Patent numberCA 1330585 C
Classification (IPC)F41G7/30

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedJuly 28, 1989Patent grantedJuly 5, 1994Term endedJuly 5, 2011

Sources & verification

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