Title: Butterfly valve
Patent number: 23,902
Date granted: 5/10/1859
Notes: Reissue 1,204 on July 2, 1861.
View this patent at the USPTO.
Title: Butterfly valve
Patent number: 23,902
Date granted: 5/10/1859
Notes: Reissue 1,204 on July 2, 1861.
View this patent at the USPTO.