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Canadian Patents Database

Advanced Search Example #3

This example finds, by list of hundred, the canadian patents issued in 1996 that were filed with canadian inventors under the international filing procedure, PCT.
  
NOTE: Selecting English or French searches only patents issued on or after August 15, 1978.
Date Search (Optional)
To restrict your search to a specific date range, you must select a date field below. For the date search coverage, see completeness of date fields.