PROCESS FOR THE PRODUCTION OF NEW PHOSPHORIC ACID ESTERS AND OF NEW .alpha.-HALOGEN CYCLOBUTANONES SERVING AS STARTING MATERIALS AND USE OF THE NEW PHOSPHORIC ACID ESTERS FOR THE COMBATTING OF PESTS

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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 August 25, 1970. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 1987.
• We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.