(a)Preparation and sealing by officer taking deposition. Unless an extension of time is granted by the court, the officer taking the deposition shall prepare and seal the deposition within 30 days after the taking of the deposition. (b)Depositions taken outside this state. Unless an extension of time is granted by the court, depositions taken outside this state shall be filed with the court within 30 days after the taking of the deposition; provided, however, that if a deposition is taken less than 30 days prior to trial, the party taking the deposition shall make appropriate arrangements with the officer taking the deposition for the filing thereof prior to the commencement of trial. (c)Unsigned depositions. If the officer prepares and seals an unsigned deposition, the officer shall certify on the deposition the fact of waiver, illness, absence or failure of the witness to appear, or the refusal to sign, together with the reason, if any, given therefor. (d)Sealing. Once the officer has sealed a deposition it shall remain sealed unless opened temporarily by the officer or opened by the direction of a judge; provided that copies may be obtained pursuant to Rule 30(f)(2) of the District Court Rules of Civil Procedure. Amended March 16, 1984, partly effective 3/16/1984, fully effective 5/1/1984; further amended February 8, 1996, effective 4/1/1996.