|
US2053671A
|
|
Pneumatic dispatch carrier
|
|
US2000400A
|
|
Pneumatic dispatch carrier
|
|
US1683391A
|
|
Electrically-controlled dumb-waiter
|
|
US1497691A
|
|
Terminal device for pneumatic-dispatch tubes
|
|
US1499318A
|
|
Carrier-sorting device for pneumatic-dispatch systems
|
|
US1492734A
|
|
Carrier for pneumatic-dispatch tubes
|
|
US1494696A
|
|
Carrier-spacing device
|
|
US1452280A
|
|
Pneumatic-dispatch system
|
|
US1443795A
|
|
Governing means for pneumatic systems
|
|
US1354116A
|
|
Governing mechanism for despatch systems
|
|
US1327718A
|
|
Pneumatic-despatch-tube apparatus
|
|
US1367163A
|
|
Pneumatic-despatch-tube apparatus
|
|
US1367162A
|
|
Carrier-distributer
|
|
US1065458A
|
|
Poultry-picker.
|
