In an age when most things are disposable, cell phones swapped annually , cars traded every three years and homes put on the market ever so often, John Nordskog and his Super Dynamic vacuum cleaner appear to be from a bygone era. "This thing is almost as old as I am, and it's running better than I am," the 57-year-old Nordskog said of the dark blue canister machine his mother, Thelma, purchased in October 1952 from Ideal Vacuum Stores in Newark. At least once a week, Nordskog pulls out the Super Dynamic, shunning the more modern incarnations of the vacuum...