|
US1654165A
|
|
Windmill
|
|
US1074705A
|
|
Calculating-machine.
|
|
US1074704A
|
|
Calculating-machine.
|
|
US1072933A
|
|
Calculating-machine.
|
|
US1066096A
|
|
Calculating-machine.
|
|
US1028344A
|
|
Calculating-machine.
|
|
US1088219A
|
|
Calculating-machine.
|
|
US1003723A
|
|
Key-action for calculating-machines.
|
|
US982416A
|
|
Key for keyboard calculating-machines.
|
|
US996009A
|
|
Calculating-machine.
|
|
US992950A
|
|
Calculating-machine.
|
|
US960528A
|
|
Calculating-machine.
|
|
US907486A
|
|
Diaphragm-controller for cameras.
|
|
US762521A
|
|
Registering mechanism for calculating-machines.
|
|
US767107A
|
|
Canceling mechanism for calculators.
|
|
US762520A
|
|
Calculating-machine.
|
|
US733379A
|
|
Casing for key-operated machines.
|
|
US694955A
|
|
Tabulating-machine.
|
|
US671109A
|
|
Calculating-machine.
|
|
US693958A
|
|
Duplicate printing mechanism for adding-machines.
|
