минимум на соответствующий срок busin.

[Nitka]

Кидаю клич о помощи. Никак не сформулирую по-человечески следующую фразу.
Контекст - пункт в контракте.

При смещении сроков выполнения Покупателем обязательств по Приложениям №4 и №5 настоящего контракта, сроки поставок и испытаний Оборудования продлеваются минимум на соответствующий срок.

[Svetlana_N]

Should a delay occur in Seller’s performance under Appendix/Schedule # 4 and Appendix/Schedule # 4 hereof the term/timeline/time scale of delivery and trial/testing shall be extended accordingly

[bon@ fide]

should Buyer not meet the contract dates as per Appendices 4 and 5, the dates for delivery and testing (or delivery and testing dates) of equipment will be extended as appropriate (or required).

[langkawi2006]

variant:
If the Buyer fails to meet the dates stipulated for performance of its obligations in Annexes #4 and #5 hereto, the term for delivery and testing of the equipment shall be extended at least for the relevant period of time.