Simultaneously contested claims

§ 4007. Simultaneously contested claims (a) In simultaneously contested claims where one is allowed and one rejected, the time allowed for the filing of an application for review on appeal shall be sixty days from the date notice is mailed of the original action to the claimant to whom the action is adverse. In such cases the activity concerned shall promptly notify all parties in interest of the original action taken, expressly inviting attention to the fact that an application for review on appeal will not be entertained unless filed with the sixty-day period prescribed by this subsection. Such notices shall be forwarded to the parties in interest to the last known address of record. (b) Upon the filing of an application for review on appeal in simultaneously contested claims, all parties other than the applicant for review on appeal whose interest may be adversely affected by the decision, shall be notified of the substance thereof and allowed thirty days 72 Stat. 1243from the date of mailing of such notice within which to file brief or argument in answer thereto before the record is forwarded on application for review on appeal. Such notice shall be forwarded to the last known address of record of the parties whose interests may be adversely affected, and such action shall constitute sufficient evidence of notice.