When a storm knocked out power in this Iowa town, Harold McClure might have been in dire straits had it not been for his inventive neighbor.

McClure’s health issues requires him to be hooked up to oxygen tanks 24 hours a day, but when his house lost electricity earlier this week, his tanks only had enough power to last for a few hours.

Luckily, his neighbor, Joe Gazelle, is a tinkerer.

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A few years…