IC 011. US 013 021 023 031 034. G & S: Heat exchangers not being parts of machines, and fittings therefor. FIRST USE: 20070201. FIRST USE IN COMMERCE: 20070201
IC 037. US 100 103 106. G & S: Installation, maintenance and repair of mechanical systems. FIRST USE: 20070201. FIRST USE IN COMMERCE: 20070201
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