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Lukens Steel Co

Lukens Ste

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2813332A	Process of preparing composite metal products	Expired / Lapsed	1953-08-14	1957-11-19	2	Details
US2797899A	Rotating double shell heat exchange drum means and method o…	Expired / Lapsed	1952-12-11	1957-07-02	0	Details
US2786265A	Process of producing composite metal products	Expired / Lapsed	1953-02-03	1957-03-26	2	Details
US2538985A	Roll	Expired / Lapsed	1947-01-10	1951-01-23	0	Details