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Boatmens National Bank of St Louis

Boatmens N

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
USD251884S	Telephone booth	Expired / Lapsed	1977-05-31	1979-05-22	1	Details
US4141356A	Respirator system and method	Expired / Lapsed	1977-11-18	1979-02-27	30	Details
US4096858A	Volume-rate respirator system and method	Expired / Lapsed	1976-12-20	1978-06-27	8	Details
US4082093A	Compensator valve	Expired / Lapsed	1977-04-27	1978-04-04	5	Details
US1896520A	Process for the manufacture of a disembittered product of w…	Expired / Lapsed	1928-05-24	1933-02-07	0	Details