Title: Hermetically closed and keyless padlock
Patent number: 77,953
Date granted: 5/19/1868
View this patent at the USPTO.
Inventor: S. Bickerstaff
Title: Hermetically closed and keyless padlock
Patent number: 77,953
Date granted: 5/19/1868
View this patent at the USPTO.
Inventor: S. Bickerstaff