Title: Low water alarm for steam boilers
Patent number: 128,318
Date granted: 6/25/1872
View this patent at the USPTO.
Inventor: John Leistner
Inventor: Augustus Kayser
Title: Low water alarm for steam boilers
Patent number: 128,318
Date granted: 6/25/1872
View this patent at the USPTO.
Inventor: John Leistner
Inventor: Augustus Kayser