Title: Stove pipe elbow machine
Patent number: 135,880
Date granted: 2/18/1873
View this patent at the USPTO.
Inventor: John Beckmann
Inventor: John Gibson
Title: Stove pipe elbow machine
Patent number: 135,880
Date granted: 2/18/1873
View this patent at the USPTO.
Inventor: John Beckmann
Inventor: John Gibson