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AIR CONTROL SYSTEMS Inc

AIR CONTRO
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US1891713A Air conditioning system Expired / Lapsed 1932-04-16 1932-12-20 0 Details
US1891714A Refrigerating system Expired / Lapsed 1932-04-16 1932-12-20 0 Details