overall: 6 cm x 17.8 cm x 25.3 cm; 2 3/8 in x 7 in x 9 15/16 in
Object Name:
press, copy
Object Type:
Patent Model
Date made:
ca 1877
Patent date:
1877-07-24
Description (Brief):
This patent model demonstrates an invention for a copying press which was granted patent number 193346. The patent describes a letter-copying press in which the pressure was produced by inflating an air bag.
