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The patent US Patent 4271134 specifies in the Example 1 that the inflow rate of Flouride is 2 lb/hr (pg 4, line 5). However, in Table 1 of the same example, a Flouride gas effluent of 4 lb/hr is mentioned in the old treatment method. Where did the additional 2 lb/hr of Flouride come from?

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This is from 1981 - I assume it is no longer in force. – George White Feb 7 at 5:56

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