|
US2891182A
|
|
Commutator-type electric motor of temperature-controlled output torque
|
|
US2932749A
|
|
Commutator-type electric motor of regulated output torque
|
|
US2905839A
|
|
Commutator-type electric motor of regulated output torque
|
|
US2897381A
|
|
Commutator-type electric motor of regulated output torque
|
|
US2878682A
|
|
Snap-action movement
|
|
US2871702A
|
|
Escapement
|
|
US2801352A
|
|
Motor of regulated output torque
|
|
US2862352A
|
|
Waterproof watch
|
|
US2809311A
|
|
Bearings of the sealed viscous lubrication type
|
|
US2788455A
|
|
Self-starting synchronous motor
|
|
US2823327A
|
|
Reaction-type synchronous motor with lifelong permanent magnet rotor
|
|
US2789673A
|
|
Directional drive control for selfstarting synchronous motor
|
|
US2783657A
|
|
Constant torque drive
|
|
US2709333A
|
|
Crystal for non-cemented mounting in watch case bezel
|
|
US2673939A
|
|
Drive-control for synchronous motors
|
|
US2747361A
|
|
Self-lubricating shaft bearings
|
|
US2677776A
|
|
Synchronous motor of the selfstarting type
|
|
US2750730A
|
|
Shock and vibration proof oscillator
|
|
US2660857A
|
|
Case for timepieces and the like
|
|
US2679722A
|
|
Escapement
|
