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45 CFR 1149.16 - What constitutes proof of service?
(1) When service is made by registered or certified mail, the return postal receipt will serve as proof of service. (2) When service is made by personal
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Proof of mailing | FTB.ca.gov
Sep 22, 2021 Generally, proof of mailing includes: Postmark; Certified or registered mail receipt; Tracking information. These do not serve as proof of
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WV 250 Proof Of Service Response By Mail WV250
I placed copies of the documents listed above in a sealed envelope and mailed them as described below: Clerk stamps date here when form is filed. PROOF OF
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