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DEV ASSOCIATES Inc

DEV ASSOCI
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2080154A Air filter Expired / Lapsed 1932-12-10 1937-05-11 0 Details
US2076305A Gas filter Expired / Lapsed 1935-01-16 1937-04-06 0 Details
US2050508A Gas filter Expired / Lapsed 1934-12-11 1936-08-11 0 Details