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BUILDERS IRON FOUNDRY

BUILDERS I
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2322374A Control apparatus Expired / Lapsed 1941-02-25 1943-06-22 0 Details
US2090069A Proportioning controller Expired / Lapsed 1934-06-02 1937-08-17 0 Details