|
US3505945A
|
|
Knock-down fume hood
|
|
US3384387A
|
|
Tow bar attachment
|
|
US3114408A
|
|
Shear tread wheel
|
|
US3082017A
|
|
Wheel suspension with polygonal spring support
|
|
US2952473A
|
|
Combined wheel suspension and leveling jack assembly
|
|
US2961073A
|
|
Parking brake
|
|
US2962126A
|
|
Foot operated wheel brake
|
|
US2960717A
|
|
Caster swivel control device
|
|
US2962329A
|
|
Wheel hub seal
|
|
US2972163A
|
|
Swivel lock and wheel brake
|
|
US2914364A
|
|
Sealed wheel
|
|
US2785017A
|
|
Sparkless grooved wheel
|
|
US2832438A
|
|
Self-adjusting floor brake
|
|
US2832091A
|
|
Spring attachment for casters
|
|
US2766497A
|
|
Mechanical leverage augmenter
|
|
US2617698A
|
|
Sealed wheel
|
|
US2512148A
|
|
Sealed wheel
|
|
US2563715A
|
|
Separable rim for pneumatic tires
|
|
CA488124A
|
|
Sealed wheels
|
