lost H1 and H4

[immihelp]

I lost my husband's H1 and my H4 approval notices. Could you please
suggest me about how long it would take to get the duplicate ones and how long can we use them ? Also could you please tell me if I would be charged with any amount if I would want to get the duplicate ones ?

[immihelp]

Read https://www.immihelp.com/get-duplicate-approval-notice-application-petition-from-uscis/