Beginning with the sixtieth day after this act takes effect, every insurer shall, before using or applying any rate to any kind of insurance, file with the commissioner a copy of the rating-system upon which such rate is based, or by which such rate is fixed or determined. The filing herein required may, on written notice by an insurer to the commissioner, be made on behalf of such insurer, by a rating organization of which such insurer is a member or subscriber. The provisions of this section shall be deemed to have been complied with by any insurer which had, before the effective date of this act, directly or by a rating organization of which it is a member or subscriber, or by a designated agent or expert, filed with the commissioner a rating-system, substantially in the form required by this section to be filed. From and after the date of the filing of such rating-systems, every insurer shall charge and receive rates fixed or determined in strict conformity therewith, except as in this act otherwise expressly provided.

L.1944, c. 27, p. 73, s. 6.