Kernrechtsfrage
Whether the contract included a post-termination obligation to buy back empty cylinders.
Extrahierter Entscheid
Yes. The contract was supplemented by the court to include a continuing buyback duty after termination.
Extrahierte Begründung
The court found a contractual gap and, applying the hypothetical will of reasonable and honest parties, held that the plaintiff's interest in returning leftover cylinders outweighed the defendant's interest in limiting returns to the contract period.