Title: Low water alarm
Patent number: 119,037
Date granted: 9/19/1871
View this patent at the USPTO.
Inventor: John Leistner
Inventor: Augustus Kayser
Title: Low water alarm
Patent number: 119,037
Date granted: 9/19/1871
View this patent at the USPTO.
Inventor: John Leistner
Inventor: Augustus Kayser