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MARTHA F MCKESSON

MARTHA F M

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US2228983A	Basal metabolism diagnostic apparatus	Expired / Lapsed	1940-02-27	1941-01-14	0	Details
US2220674A	Mouth prop	Expired / Lapsed	1939-05-17	1940-11-05	0	Details
US2220672A	Respirator control	Expired / Lapsed	1939-03-16	1940-11-05	0	Details
US2195019A	Contact thermometer	Expired / Lapsed	1938-04-22	1940-03-26	0	Details
US2072705A	Hearing testing	Expired / Lapsed	1935-07-17	1937-03-02	0	Details