casement window cranks

A quick learner says:
I bought some casement windows from a company called Slim-Line windows and doors in 2000, unfortunatley they are no longer in business. The cranks on the windows no longer opens the windows. I managed to find this number on one of the window locks: CAN PAT2142071

Would you be able to help me locate replacement cranks for my wondows?

Thank you,
Profile picture of Paul
Paul from SWISCO responded:
We will definitely try our best. Could you show us a couple pictures of the hardware in question? That would be the best place to start. Thank you!
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