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National Drug Co

National D

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2554072A	Antacid composition	Expired / Lapsed	1948-10-04	1951-05-22	1	Details
US2202163A	Closure for dispensing containers	Expired / Lapsed	1936-06-15	1940-05-28	0	Details
US2168270A	Hypodermic-injection apparatus	Expired / Lapsed	1936-11-21	1939-08-01	0	Details
US2100610A	Gas filter	Expired / Lapsed	1936-06-15	1937-11-30	0	Details