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DUPLATE Corp

DUPLATE Co
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US1959221A Method and apparatus for making safety glass Expired / Lapsed 1932-06-15 1934-05-15 0 Details
US1954061A Device for grooving safety glass Expired / Lapsed 1932-10-19 1934-04-10 0 Details
US1939998A Process and apparatus for making safety glass Expired / Lapsed 1932-08-11 1933-12-19 0 Details