TV Sitcoms

Which of these sitcoms features an animated family whose father deals in propane and propane accessories?

More Questions from TV Sitcoms
When Woody asks "What's going on, Mr. Peterson?" on "Cheers", what would Norm rather talk about?
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What are the call letters of Trumaine's radio station on "Married with Children"?
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On "The Fresh Prince of Bel-Air", what is Will Smith's mother's name?
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During the "iCarly" episode "iWant A World Record", who breaks a world record?
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On "Seinfeld", who did George hire as a secretary at his Yankee office?
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What is the nickname of Bob Kelso's wife Enid on NBC's "Scrubs"?
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On "Friends", what did Monica spill on Rachel's shoulder on Prom Night?
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What is the name of the mall that Al works at in "Married with Children"?
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